Product Specification#

Status: Draft, 2026-08-03 (all cited sources accessed 2026-08-03).

Scope note. This is a standardized composite specification assembled for reference liability cash-flow modeling. It does not describe any single insurer’s product. Facts carrying a source tag — [S#] (primary product documents) and [R#] (regulatory/actuarial references), both numbered per _research/term-assurance.md and resolved in sources.md (same directory; numbering frozen, never renumbered), and [REG-R#] (the cross-product reference library references/regulatory-and-actuarial-references.md, whose own R-numbering is distinct; research provenance in _research/regulatory-actuarial.md) — were extracted from the cited document. Values marked std are standardizations introduced for the reference implementation; each std table row carries a footnote giving the rationale and the observed range across insurers. Facts the research file could not verify are flagged unverified. The composite is drawn from three insurers’ current retail products: one carrier’s four separate level, decreasing, increasing and family-income products [S1]–[S5], a second carrier’s single combined life policy [S6] [S7], and a third carrier’s menu-plan life cover [S8] [S9].


Product overview and market role#

UK term assurance is long-term insurance business, Regulated Activities Order Class I “Life and annuity” — contracts of insurance on human life R6. It is a pure protection product: a guaranteed level premium buys a death benefit for a fixed term, with no savings or investment element, no surrender value, and no paid-up value — if premiums stop, the policy lapses and nothing is payable regardless of how long it was held [S6] R8. The FCA’s market taxonomy distinguishes level term assurance, decreasing term assurance (commonly tracking a repayment mortgage), increasing term assurance, renewable term assurance, and family income benefit — the last described by the FCA as “an ongoing monthly income” that “can be considered as a decreasing term assurance” R8.

Term assurance was the most purchased UK pure protection product in 2023: 436,000 new term assurance policies were issued (against 1,065,000 new accelerated critical illness policies) and 3.119m term assurance policies were in force; the top 5 insurers wrote approximately 80% of new business premiums, and 79–87% of mortgage-related term assurance over 2021–24 R8. The ABI average term assurance claim value in 2023 was £54,600 R8. Distribution is intermediary-dominated with ~96% of commission paid upfront, clawback periods of 2–4 years, and insurer Distribution Quality Management systems tracking lapses R9. Reinsurers take a substantial share of the mortality risk and influence pricing and product design R8; the frequently cited 70–90%+ cession range is unverified.

All three sourced insurers embed terminal illness cover (accelerated payment of the death benefit on a sub-12-month life expectancy) at no extra cost [S1] [S6] [S8] R8, and all three guarantee premiums for life-only cover [S2] [S6] [S9]. A key contrast with US term life: the UK policy simply expires at the end of the term. There is no US-style post-level-term annually-renewable tail, and renewal/conversion options are not standard in the current UK retail market (see Contractual mechanics — Expiry).


Representative specification#

Product identity and issue rules#

Parameter

Representative value

Basis

Design type

Guaranteed-premium term assurance; non-participating; no cash values

[S2] [S6] [S9] R8

Benefit shape (model-point parameter)

(i) level lump sum; (ii) decreasing lump sum (mortgage protection); (iii) family income benefit (FIB, monthly income)

[S2] [S6] [S8]; packaging std (1)

Lives basis

Single life, or joint life first death (optional)

[S1] [S2] [S6]; scope std (2)

Regulatory class

Long-term insurance, Class I (life and annuity)

R6

Entry ages

18–77 (decreasing: 18–74; FIB: 18–64)

[S2] [S3] [S7]; envelope std (3)

Maximum expiry age

90th birthday (FIB: 70th birthday)

[S2] [S3] [S7]; envelope std (3)

Policy term

1–50 years (decreasing: 5–50; FIB: 5–40); terminal illness cover requires term ≥ 2 years

[S2] [S4] [S7]; envelope std (3)

Maximum sum assured

£10,000,000 level/decreasing (subject to underwriting); FIB £10,000/month

[S2] [S4]; adoption std (4)

Minimum premium

£5/month

[S5]; adoption std (5)

Residence at outset

UK resident (one carrier: living in the UK ≥ 183 days in the last tax year; another also admits Channel Islands/Isle of Man/Gibraltar)

[S1] [S6]

Anchor model cell

Male 35 non-smoker, single life, level shape, term 25 years, sum assured £150,000, premium £12.00/month

std (6)

Footnotes to std rows:

  1. Packaging varies: one carrier writes one policy with three payout bases [S6] [S7]; a second, a menu plan with five payout shapes (level/increasing/decreasing lump sum, level/increasing income) [S8]; the third sells the shapes as four separate products [S2]. The composite treats benefit shape as a model-point parameter with three values (increasing-shape products are represented via the indexation option instead).

  2. Joint life first death is the standard joint basis across all three insurers [S1] [S2] [S6]. One carrier additionally writes dual life and joint life second event [S9]; both are excluded from the composite.

  3. Envelope = the limits of two of the three carriers, which agree closely (entry to 77, expiry by 90, terms 1–50 [S2] [S3] [S7]); FIB limits per the family-income product of one of them (entry to 64, expiry by 70, terms 5–40 [S2] [S4]). The third carrier is materially wider (entry 18–88, expiry to 89, terms 1–72 [S9]) and is treated as an outlier. The minimum-expiry-age-29 rule seen at one carrier [S2] [S3] is unique to it and not carried into the composite. Terminal illness cover is not provided on that carrier’s 1-year (2-year increasing-shape) minimum terms [S2]; TIC automatic for terms of 2+ years [S4].

  4. One carrier publishes £10m (level/decreasing), £4m increasing, £10,000/month family income (£4,000 with CI) [S2] [S4]; a second publishes no monetary maximum [S6]; the third is unlimited (£5m cap with the increasing option) [S9].

  5. Only one carrier publishes a value (“Cover from only £5 a month”, “Fixed premiums from £5 a month”) [S5]; another references a “minimum premium limit” without a public value [S6]; the often-quoted market range of £5–£10/month is unverified.

  6. Premium rates are not public — retail premiums are quote-engine outputs, and no insurer publishes per-mille rate tables (research gap; the per-mille characterisation of UK protection pricing is itself unverified). The £12.00/month anchor premium is a pure modeling value. Sum assured £150,000 is a round-number standardization; the ABI average term claim of £54,600 (2023, whole in-force) R8 anchors the order of magnitude, with new mortgage-related business typically larger.

Premiums#

Parameter

Representative value

Basis

Premium basis

Level, guaranteed for the full policy term (life-only cover)

[S2] [S6] [S9]

Frequency

Monthly (annual available); composite default monthly

[S1] [S6]; default std (7)

Payment method

Direct debit, in sterling (one carrier: from a UK, Channel Islands, Isle of Man or Gibraltar bank account)

[S6]

Rating factors

Age, smoker status, health, lifestyle, occupation, type/amount of cover; gender-neutral

[S7] R8; gender neutrality unverified (8)

Rate structure

Not public (quote-engine pricing); the office premium is a model-point input, backed by a std mortality proxy basis in the technical notes

gap; std (8)

Annual-mode refund at claim

One carrier refunds the remaining months’ premium in the policy year on a full-cover claim; not modeled

[S1]; scope std (7)

  1. Monthly direct debit is the dominant retail mode (one carrier requires direct debit [S6]); the composite standardizes on monthly and ignores the annual-mode claim-time refund [S1] and that carrier’s deduction of grace-window unpaid premiums from claims [S6] as immaterial modal refinements.

  2. Disclosed rating factors: one carrier lists age, occupation, health, lifestyle, smoking habits, type and amount of cover [S7]; FCA adds that reinsurers shape risk-based adjustments R8. None of the three insurers lists sex as a rating factor, but the gender-neutral pricing requirement itself was not confirmed from a fetched document unverified. No insurer publishes premium rate tables — the technical notes specify a std mortality proxy basis from public tables and take the office premium itself as a model-point input (no premium-rate table is constructed).

Benefit provisions#

Parameter

Representative value

Basis

Death benefit — level shape

Sum assured, constant

[S1] [S6]

Death benefit — decreasing shape

Outstanding balance of a notional capital-and-interest (repayment) mortgage, decreasing monthly at schedule rate j

[S1] [S6] [S8]

Decreasing schedule rate j

Client-selected at outset; representative default 6% p.a.

observed range [S4] [S8] [S9] [S6]; pick std (9)

Death benefit — FIB shape

Monthly income I from death (paid in arrears) to the end of the term; representative I = £1,000/month

[S2] [S6] [S8]; value std (10)

FIB commutation

Remaining instalments commutable to a lump sum, reduced “fairly and reasonably” for early payment

[S6] [S8]

Terminal illness benefit

100% acceleration of the death benefit on a two-limb definition: (i) no known cure / progressed beyond cure, and (ii) consultant’s opinion of death expected within 12 months; amount = cover calculated at the date the definition is met; included at no extra cost, terms ≥ 2 years

[S1] [S6] [S8] R8; term floor [S2] [S4]

Suicide exclusion

No payment if death results from suicide or intentional self-inflicted injury within 12 months of commencement; the only standard exclusion

[S1] [S6] [S8]

Other exclusions

None standard; case-by-case underwriting exclusions may appear in the policy schedule

[S1] [S3]

Payout ends the policy

Policy terminates on payment of the (single) main benefit; joint policies pay once

[S1] [S6] [S8]

Expiry

Cover ceases at the end of the term; no maturity value, no renewal, no conversion

[S1] [S2] [S6] [S8] R8

  1. Observed: one carrier — the client chooses the decreasing rate from 5%, 7%, 8% or 10% [S4], the rate appearing in the policy schedule [S1]; a second — default schedule at a yearly rate of 6%, or a chosen rate in 0%–15% where the mortgage-interest-rate feature applies [S8] [S9]; the third — a fixed rate set at application and shown in the schedule, value/range not published [S6] [S7]. 6% is chosen as the representative default because it is the only observed insurer default [S8] and sits inside both the first carrier’s menu range (5–10%) [S4] and the second carrier’s selectable range [S8] [S9]. Two of the three carriers warn that cover may not repay the mortgage if the actual loan rate exceeds the schedule rate [S1] [S3] [S8].

  2. FIB benefit is expressed as a monthly amount [S6]; one carrier’s family-income product caps it at £10,000/month (£4,000 with CI) [S2]. £1,000/month is a round-number modeling value (£12,000/year, same order as the anchor lump-sum cell over a mid-length run-off).

Options#

Parameter

Representative value

Basis

Indexation (RPI) option

At each anniversary, cover increases by the 12-month RPI change, capped at 10%; no increase if RPI ≤ 0%; premium increases by 1.5 × the cover increase %, capped at 15%; option removed after 3 consecutive declines

[S1] [S2] [S6] [S7]; composite std (11)

FIB under indexation

Fixed 3%/5% escalation variants exist with instalments continuing to increase during payment; excluded from the composite

[S6] [S7]; scope std (11)

Guaranteed insurability option (GIO)

On life events (marriage/civil partnership, divorce/dissolution, birth/adoption, mortgage increase, salary increase): increase without further underwriting, capped at the lower of 100% of original cover and £200,000 across all exercises; exercise within 6 months of the event; all lives under 55; written as a new policy at then-current rates

[S1] [S6]; composite std (12)

Waiver of premium (WOP)

Optional, extra premium; premiums waived after a 26-week deferred period of incapacity (own-occupation definition, specified-work-tasks fallback), until recovery, claim, or expiry

[S1] [S2]; composite std (13)

  1. Observed indexation bases: one carrier — RPI, no increase if the change is below 1%, cover cap 10%, premium × 1.5 capped 15% [S1] [S2]; a second — RPI (measured over the 12 months ending 12 weeks before the anniversary month) capped 10% with premium × 1.5 capped 15%, or fixed 3%/5%, RPI ≤ 0% → no change [S6] [S7]; the third — RPI with a minimum of 2% and maximum of 10%, or fixed 2–5%, premium × 1.2 [S8] [S9]. The composite takes RPI/10%-cap/×1.5/15%-cap (the mode of the first two [S1] [S2] [S6] [S7]), the ≤ 0% floor of the second [S6], and the 3-consecutive-declines removal rule (the first two; the third removes after 2 [S8]). The second carrier’s FIB-shape escalation uniquely carries no premium increase [S6]; the third’s income shapes increase premiums × 1.2 [S8]; both excluded.

  2. Observed GIO caps: one carrier — lower of 100% of original cover and £200,000, events exercised within 6 months, not after age 55 [S1] (family-income variant capped at £1,400/month [S2]); a second — total across exercises lower of original cover and £200,000 (FIB: £8,000/year equivalent), new policy within 180 days of the event, repeatable until 55 [S6]; the third — lowest of half the original cover and £200,000 (income covers: £10,000/year) [S8]. The composite takes the £200,000/100% cap and 6-month window; all three implement the increase as a separate policy at then-current rates [S1] [S6] [S8].

  3. Observed WOP: one carrier — 26 consecutive weeks of incapacity before waiver; own-occupation, or 3-of-6 specified work tasks if not in paid work [S1] [S2]; a second — deferred period per the policy schedule; own-occupation, or 2-of-6 work tasks where work stopped > 12 months before; claims to age 71 [S6] [S7]; the third — no WOP exists on the plan (zero occurrences in the 84-page plan details) [S8]. The composite includes WOP as an optional rider with the first carrier’s 26-week deferred period [S1] (the only concretely published deferral).

Termination and values#

Parameter

Representative value

Basis

Surrender value

None (“This isn’t the kind of policy that you can ‘cash in’”)

[S6] R8

Paid-up value

None

[S1] [S6] [S8]

Grace period

60 days from each due date; claims in the window paid net of unpaid premiums; cancellation (lapse) after 60 days, no refund

[S1] [S6]

Cooling-off

30 days from commencement, full premium refund

[S1] [S6]

Reinstatement

No general contractual reinstatement right in the fetched conditions; not modeled

scope std (14)

Misrepresentation remedies

Careless: policy amended to the terms that would have applied — if higher premiums would have applied, cover reduced to (premium actually charged × original cover ÷ higher premium); deliberate/reckless: cancellation and refusal of claims

[S1]; statutory frame REG-R20

  1. One carrier’s suicide clause runs “from the date cover started or restarted” [S8], implying some restart mechanism, but no fetched document sets out a general reinstatement provision; the composite terminates lapsed policies finally.


Contractual mechanics#

Premium provisions#

The office premium is level and guaranteed for the full term for life-only cover [S2] [S6] [S9]: monthly premium P_m (composite default mode), with the annualized premium P_a = 12 × P_m used where a figure per policy year is wanted. The model runs on a monthly grid, so P_m is charged in the month it falls due and the annual mode is twelve months’ premium in the first month of each policy year. Premiums are due monthly by direct debit [S6]; a 60-day grace period applies from each due date, after which the policy is cancelled with no refund and no residual value [S1] [S6]. There are no premium reviews on the composite: reviewable premiums exist in the market only on critical illness covers attached to these chassis [S2] [S6] [S8], which are out of scope. If the indexation option is exercised, the premium increases by 1.5 × the applied cover increase percentage (cap 15% p.a.) — the only in-force mechanism by which the premium can change, apart from policyholder-requested alterations, which are out of scope [S1] [S2] [S6].

Death and terminal illness benefit#

Let n = term in years, N = 12n months, k = completed policy months at the date of claim, SA0 = initial sum assured.

Level shape. Benefit DB = SA0 (times the cumulative indexation factor if the option is exercised) [S1] [S6].

Decreasing shape (mortgage protection). The benefit is the outstanding balance of a notional repayment (capital-and-interest) loan of SA0 over N months at the schedule rate, decreasing monthly, while premiums stay level [S1] [S6] [S8]:

j_m = (1 + j)^(1/12) − 1                      (monthly effective schedule rate) [std convention]
B(k) = SA0 × [(1+j_m)^N − (1+j_m)^k] / [(1+j_m)^N − 1]

with j = 6% std (footnote 9). Since (1+j_m)^12 = 1+j, whole-year balances reduce to B(12t) = SA0 × [(1+j)^n (1+j)^t] / [(1+j)^n 1]. The conversion of the insurer’s quoted “yearly interest rate” [S8] to a monthly rate is standardized as the effective-rate root std; a nominal-/12 convention is a permissible variant and the difference is small at these rates.

Family income benefit shape. On death (or terminal illness acceptance) at month k, the policy pays I per month, in arrears, from the claim to the end of the term — N k instalments [S2] [S6] [S8]. The instalment stream is an annuity-certain: it does not depend on any life after the claim. The claimant may commute remaining instalments to a lump sum, reduced “fairly and reasonably” to reflect early payment [S6] [S8]; the commutation basis is insurer-discretionary (see technical notes, assumption class (b)). The FCA characterises FIB as decreasing term assurance in present-value terms: the maximum possible remaining payments reduce over time R8.

Terminal illness. The full death benefit is accelerated when both limbs of the definition are met — (i) the illness has no known cure or has progressed beyond cure, and (ii) the attending consultant expects death within 12 months [S1] [S6] [S8] R8. The amount paid is the cover amount calculated at the date the definition is met, so for the decreasing shape a TI payment can be lower than a later death payment would have been [S1]. Payment of the benefit ends the policy [S1] [S6] [S8]. For modeling, TI is a timing acceleration of the same benefit, not an additional benefit (see technical notes).

Suicide exclusion. No benefit is paid if death results from suicide or intentional self-inflicted injury within 12 months of commencement [S1] [S6] [S8] (one carrier frames it as the “first year” [S1]; another runs it from start or restart and excludes self-inflicted TI claims at any time [S8]).

Joint life#

The composite joint basis is joint life first death: one benefit, paid on the first death or terminal illness of either life, ending the policy [S1] [S2] [S6]. Separation options (splitting a joint policy into two single-life policies on divorce/ dissolution or mortgage change without full underwriting) exist at two of the three carriers [S1] [S6] but are out of scope, as is one carrier’s replacement-cover option for the surviving life after a first-death claim [S1].

Expiry — no post-term tail (UK vs US)#

At the end of the term the policy simply expires: cover ceases, nothing is payable, and there is no maturity value [S1] [S6] [S8] R8. There is no US-style post-level-term annually-renewable tail. Renewal and conversion options are not standard in the current UK retail market: none of the three insurers’ fetched current products contains a renewal or conversion option, and one carrier’s old conversion option is explicitly “no longer offered” [S2]. The FCA records renewable term assurance as offered in the UK market R8, so a renewal feature should be treated as an optional extension of the reference model, never as core. A projection model therefore terminates all states at month N with no tail liability.


Riders and options#

In scope (modeled or parameterized):

  • Terminal illness benefit — embedded, no extra premium, terms ≥ 2 years [S1] [S6] [S8] [S2] [S4]; modeled as claim-timing acceleration.

  • Indexation (RPI) option — per the Options table; modeled via the cumulative indexation factor with take-up behavior in the technical notes [S1] [S6] [S8].

  • Guaranteed insurability option — described; generates new policies at market rates, so it creates no liability on the modeled policy and is not projected [std scope] [S1] [S6] [S8].

  • Waiver of premium — optional rider; 26-week deferral [S1]; a premium-waiver state is sketched in the technical notes but excluded from the base projection [std scope].

Out of scope: critical illness cover and CI riders (guaranteed or reviewable premiums) [S2] [S6] [S8]; one carrier’s fracture and treatment benefits [S6]; children’s covers; free pre-completion covers (free life cover ≤ £300,000 / accidental death benefit ≤ £300,000 at one carrier [S2]; house purchase cover ≤ £500,000 at another [S6]); joint-policy separation and replacement options [S1] [S6]; one carrier’s mortgage repayment guarantee (pays the actual outstanding mortgage balance rather than the notional schedule) [S8]; dual life and joint life second event bases [S9]; renewable/convertible term (not present in any fetched current product [S2] R8); commutation of FIB during payment is described contractually by one carrier but not exercised in the base model [S6].


Variations across insurers#

  1. Packaging. Separate single-shape products ([S2]) vs one policy with three payout bases ([S6]) vs a menu plan with five shapes including income options ([S8]). Composite: one chassis, benefit shape as a parameter — the second of those three structures [S6], which maps cleanly to a model-point field.

  2. Age/term envelope. Two of the three carriers agree closely (entry to 77, expiry by 90, terms 1–50) [S2] [S3] [S7]; the third is much wider (18–88, expiry 89, terms to 72) [S9]. Composite: the two-carrier envelope [S2] [S3] [S7] — two of three insurers, and the tighter, more typical bounds.

  3. Decreasing schedule rate. Client-picked menu 5/7/8/10% ([S4]) vs default 6% or chosen 0–15% ([S8] [S9]) vs fixed rate in the schedule, value unpublished ([S6] [S7]). Composite: client-selected with 6% default (footnote 9). One carrier’s actual-balance mortgage repayment guarantee [S8] is a distinctive design and excluded.

  4. FIB premium under escalation. At one carrier, escalating FIB instalments carry no premium increase [S6]; at a second, income shapes increase premiums × 1.2 [S8]; the third’s family-income product increases premiums × 1.5 [S2]. Composite: FIB escalation excluded entirely — the variation is too wide to standardize honestly.

  5. Indexation loading. Premium multiplier 1.5 at two carriers ([S1] [S2], [S6] [S7]) vs 1.2 at the third ([S8]); RPI floor: <1% no increase ([S1]) vs ≤0% ([S6]) vs 2% minimum applied ([S8]). Composite: ×1.5 (the mode) with the ≤0% floor [S6].

  6. GIO caps. 100% of original cover at two carriers ([S1], [S6]) vs 50% at the third ([S8]); all cap at £200,000. Composite: 100%/£200,000.

  7. Waiver of premium. 26-week deferral, 3-of-6 tasks fallback ([S1]) vs schedule-set deferral, 2-of-6 tasks ([S6]) vs not offered at all ([S8]). Composite: optional rider, 26-week deferral — the published mode; the third carrier shows WOP is not universal [S8].

  8. Suicide clause. Year one ([S1]) vs 12 months ([S6]) vs 12 months from start or restart ([S8]). Substantively identical; composite: 12 months.

  9. Minimum premium. £5/month published at one carrier ([S5]) vs no published value at the other two, one of which references a “minimum premium limit” without giving a value ([S6]). Composite: £5/month, the only public value.

  10. What does not vary. Guaranteed level premiums for life-only cover, embedded terminal illness on the two-limb 12-month definition, no surrender or paid-up values, and expiry without value are uniform across all three insurers [S1] [S2] [S6] [S8] [S9]; the 60-day grace and 30-day cooling-off are documented at two of the three carriers [S1] [S6] (not extracted from the third’s plan details). These are the invariant core of the composite.


Regulatory context#

Prudential — Solvency UK (PRA). The PRA concluded the Solvency II Review with PS15/24 (15 November 2024); Solvency II assimilated law was replaced by PRA rules “in full from the end of 2024”, the reformed regime to be known as “Solvency UK” R5. For a term assurance liability model the operative valuation rules are: the best estimate is the probability-weighted average of future cash-flows, discounted on the relevant risk-free term structure, on realistic assumptions, gross of reinsurance (reinsurance recoverables separate) R1; the projection must include benefit payments, expenses, premiums, intermediary payments and policyholder-charged taxation R2; and the contract boundary for guaranteed-premium term assurance is the full policy term, because the insurer has no unilateral right to reprice — reviewable premium business must instead be tested under the “premiums fully reflect the risks” rules R3. Technical provisions are best estimate plus risk margin REG-R1; the risk margin uses a 4% cost-of-capital rate with a life risk-tapering factor λ = 0.9 (floor 0.25) REG-R4 — cited, not reproduced, in this library.

Conduct — FCA. Pure protection distribution is conducted under ICOBS, which applies to non-investment insurance contracts REG-R11; the customer’s best interests rule is ICOBS 2.5.-1R, sitting alongside PROD 4 product governance and the Consumer Duty R9 REG-R12. The FCA’s pure protection market study (MS24/1) is the current conduct backdrop, examining commission structures, lapse patterns, and the value chain including reinsurer influence R8 R9.

Classification and consumer law. Term assurance is Class I long-term business under the RAO 2001, Schedule 1 Part II R6. Consumer misrepresentation remedies follow the CIDRA 2012 regime (reasonable-care duty; graduated remedies for deliberate/reckless vs careless misrepresentation) REG-R20, which one carrier’s policy remedies mirror contractually [S1]. FSCS protection is 100% of a valid claim with no upper limit [S1].

Tax. Protection policies are written to satisfy the qualifying-policy conditions (one carrier’s conditions reference para 19(3) of Schedule 15 to ICTA 1988 for option compatibility) [S1]; benefits are commonly stated to be free of income and capital gains tax [unverified — not confirmed from a fetched document]. Death benefits paid to the estate may attract inheritance tax unless the policy is written in trust or benefits pass to a spouse/civil partner; trusts are the promoted IHT route [S7]. At insurer level, post-2012 protection business is excluded from BLAGAB and taxed on trade profits under Finance Act 2012 Part 2 — a per-product tax-basis flag, not a cash-flow driver, in this library REG-R17.

Professional standards. Technical actuarial work on UK term assurance (pricing, reserving, technical provisions) falls under FRC TAS 100 v2.0 (effective 1 July 2023) R15 and TAS 200: Insurance v2.0 (effective 1 January 2025) R16.