[vahid-ahmadi]

Corrects the Cold Weather Payment planning page (docs/book/programs/gov/dwp/cold-weather-payment-plan.md), written for #435.

The page itself is already on main: it shipped in #2386 (merged 21 October 2026), and its original .added changelog entry was released in 2.143.0. This branch has merged main, dropped the released fragment and now carries only corrections to main's copy of the page.

What this PR corrects (from its changelog fragment):

Corrected the Cold Weather Payment plan (docs/book/programs/gov/dwp/cold-weather-payment-plan.md): the full regulation 1A conditions (care homes, England and Wales, Income Support and JSA premiums, mortgage-interest loans with Pension Credit), the winter 2022-23 Scottish replacement, the Winter Heating Payment rule and the weather data source.

The claim-by-claim review behind these corrections, with sources, is in the "Ready for hub review" comment on this PR.

• Changelog fragment: changelog.d/435-cold-weather-payment-corrections.changed.md (changed).
• Docs and changelog only; no code changes.

🤖 Generated with Claude Code

[MaxGhenis]

UK hub (Claude build session, for Max)
Ready for hub review

Head: 1a469ab09309c8aaf79bc26650ad470446fdd8ac

Read this first. The page is already on main, word for word, through #2386 (d50ee85a9, merged 2026-10-21). Its changelog line shipped in 2.143.0 (CHANGELOG.md:187).

This branch now:

• merges main at c65bced64 (merge commit 644804314);
• deletes changelog.d/435.added.md;
• corrects main's copy;
• adds changelog.d/435-cold-weather-payment-corrections.changed.md.

Against main, the diff is the page and the fragment. Suggested title on landing: "Correct the Cold Weather Payment plan".

The plan is still worth having. Neither CWP nor the Scottish (low-income) Winter Heating Payment is on main: git grep -i 'cold_weather|winter_heating' hits only PAWHP and Winter Fuel Payment code. #435 is open.

Claims checked (main a45baf5e4, re-checked on c65bced64)

Claim	Verdict	Source
£25 per 7-day cold period in England and Wales; 0°C over 7 days, 1 November to 31 March	true	SI 1988/1724 reg 3 and reg 1(2) (review agent); GOV.UK
NI runs its own scheme on the same terms, 1 November 2026 to 31 March 2027	true	https://www.nidirect.gov.uk/articles/cold-weather-payment
WHP £62.00 from April 2026 (SSI 2023/16 reg 9)	true	reg 9(1) as substituted by SSI 2026/170
WHP "replaced CWP there in 2023"	fixed: from winter 2022-23, first paid in February 2023	SI 1988/1724 reg 1A(8), inserted 1.11.2022 by SI 2022/1018; gov.scot
PAWHP is modelled under gov.social_security_scotland.pawhp	true	parameters/gov/social_security_scotland/pawhp/active.yaml; programs.yaml:589-599
"A household qualifies if all of the following hold" (two bullets)	fixed: entitlement is the claimant's; added the care-home and England-or-Wales conditions	reg 1A(4) "(which does not apply to a person who comes within paragraph (3)(a) or (d))", reg 1A(8); raw legislation.gov.uk text
ESA conditions (support or WRAG, severe or enhanced disability, pensioner premium, disabled child, child under 5)	true	reg 1A(3)(a), (d), (e)
"same premium test" for IS and JSA	fixed: their lists add the disability, higher pensioner and disabled child premiums	reg 1A(3)(b)-(c)
UC employment and LCW conditions; disabled child "whether working or not"	true	reg 1A(3)(f), (6); GOV.UK
SMI "with one of those premiums or children"	fixed: SMI while treated as on Pension Credit needs no further condition	reg 1A(2)(g) with (3) ("applies only if … (2)(b), (c), (d), (e) or (f)")
GOV.UK "has the exact conditions"	fixed: it summarises	—
2024-25: about 1.4 million payments, around £35 million	true	DWP news release, April 2025
DWP doesn't count actual payments; it publishes eligible estimates and triggers	true	DWP background and methodology (review agent)
Benefit check is "clean for PolicyEngine"	qualified: there is no SMI or pensioner-premium variable	grep of policyengine_uk/variables
Option 1 parameter name and entity	aligned with Phase 1 (expected_periods_per_year, benefit unit)	—
Option 3 "statistics by region"	fixed: DWP publishes by weather station, with a postcode-district file	2025-26 release attachments ("Weather stations and postcodes")
WHP qualifying benefits match CWP; qualifying week 2 to 8 November 2026	true	SSI 2023/16 reg 2, reg 4; mygov.scot
Phase 3 "reuse the Phase 1 rule"	fixed: WHP has no care-home or England-or-Wales condition, and dropped the CTC limb in 2025	SSI 2023/16 reg 4 annotation "Reg. 4(3)(d) omitted (23.6.2025) … S.S.I. 2025/195"
Met Office historic data for regional periods	fixed: monthly data for 37 stations can't count 7-day periods; use DWP's per-station triggers	https://www.metoffice.gov.uk/research/climate/maps-and-data/historic-station-data
"The FRS gives region cleanly"	made precise: region is a household input from the FRS and country is derived; region is coarse against weather stations	variables/household/region.py; country.py:21-37
WHD "covers everyone on" four benefits	fixed: bill-payers on them	GOV.UK WHD England and Wales

Corrections: 11.

Uncertain

• Reg 1A(6) applies the employment test to "the person". GOV.UK applies it to the claimant and the partner, and the page follows GOV.UK; I didn't find the joint-claim provision.
• GOV.UK no longer lists IS and JSA(IB). The regulations still do.

Full ledger: ~/reviews/uk-hub/jobs/docs-c2/b/1736-ledger.md.