Assessor-only provisional reference
Do not give this file, its source list or its answer expectations to a blinded discovery condition. This is a model-derived interpretation of checked current official sources, not a specialist-validated answer key or a decision on an individual award.
Main case
Assume Great Britain, that Universal Credit was already in payment for the relevant period, that the claimant was responsible for the child, and that other qualifying conditions continued to be met. The question does not state these facts or the UC assessment-period cycle.
The highest-rate DLA care entitlement begins on 26 January 2025. Under the relevant-benefit supersession rule, the UC award should include the higher disabled-child addition from the first day of the assessment period containing that date. The report on 28 March 2026 does not, by itself, shift the start to the notification assessment period. The generic late-notification limitation is not the controlling rule in this situation. The precise calendar start/end of the first payable AP cannot be supplied without the AP dates. [LAW-24; LAW-31; ADM-A4]
An illustrative AP running from the 10th to the 9th means the period is 10 January to 9 February 2025 and the UC effective date is 10 January 2025. These are invented illustration boundaries, not supplied claimant facts. Distinguish inclusion in the calculation for that AP from the later bank-payment date. Do not calculate arrears without the relevant award history and dated rates.
Required reasoning and source chain
- Qualification: UC Regulations 2013, regulation 24(2)(b)(i); ADM F1123. Highest-rate care, not merely the highest mobility component. [LAW-24; ADM-F1]
- Ordinary-rule branch: ADM A4352 describes late advantageous changes but its UC branch explicitly directs the reader to the exceptions. [ADM-A4]
- Controlling branch: ADM A4361 and Schedule 1 paragraph 31 of SI 2013/381 address entitlement to another relevant benefit, its cessation or an altered rate. The UC decision starts at the beginning of the AP containing that event. [ADM-A4; LAW-31]
- Missing case fact: assessment-period boundaries. A complete source set cannot supply an absent claimant fact.
- Temporal/procedural checks: verify the point-in-time legislation and relevant-benefit definition; establish UC decision/award history if a revision rather than supersession route is material. These checks are not completed by current source capture.
Validation boundary
Official current statutory representations and relevant PDF page images were checked on 25 September 2026. A full historical amendment audit and independent specialist review have not been completed. Dated statutory URL requests did not succeed in this session. Do not claim this starter contains archived historical law, a complete legal dependency set, or a reviewed production rule.
F1123's retrieved source unit also contains a current rates table. That does not establish the amount applicable in January 2025. The source unit is useful evidence for qualification, not a complete answer to the effective-date question.
Development expectations
Cases 001-005 exercise the qualifying-event date versus AP start and notification. Cases 006-007 distinguish components/rates. Case 008 tests later UC commencement and possible procedural differences. Case 009 withholds the DLA entitlement date. Case 010 tests an ordinary favourable change, not an award of another relevant benefit. Cases 011-012 are closed-evidence controls and require precisely declared source subsets before execution. All require assessor review; not all should be assigned a categorical substantive outcome without the full scenario facts.
References: ../sources.json.