Get the PA4 report
Before you challenge anything, you need the report. Ring or write to the PIP number on your decision letter and request a copy of the PA4 assessment report. It is free. It normally arrives within 10 to 14 days.
The most common errors
- Snapshot bias. One moment of function extrapolated to every day. "Walked to the assessment room" becomes "can mobilise 200 metres". The reliability test requires repeatability, not a one-off.
- Misused informal observations. Neutral or masked behaviour read as evidence of capability. Sitting still can be dissociation, not calm. Fluent speech in a 40-minute call does not show a full working day.
- Missing all four reliability limbs. A conclusion of "can do the task" without asking whether it was safely, to an acceptable standard, repeatedly, and in a reasonable time.
- "Walked 200m" with no testing. Distance conclusions drawn from the room and corridor, not from a proper account of exertion, pain, aftermath and repeatability.
- Mental-health minimisation. "Presented as pleasant and cooperative" being used to imply capacity to engage with unfamiliar people, plan a journey, or manage complex tasks daily.
- Ignored evidence. Specialist letters, medication lists, or diaries not addressed in the report.
- Ambulatory aid ignored. Use of stick, crutch, or wheelchair not recorded, or recorded but not applied to the descriptor.
The four reliability limbs
Under Regulation 4(2A), a task counts only if you can do it safely, to an acceptable standard, repeatedly, and in a reasonable time. If the PA4 does not address a limb that applies, that omission is a rebuttable error.
How to rebut
- Quote the report by paragraph number.
- State the correct fact.
- Reference the specific evidence that supports the correction (form section, GP letter, diary date).
- Apply the reliability limbs by name.
- Ask for the descriptor to be scored on the corrected basis.
Build the evidence pack
Our assessment produces a Functional Evidence Statement mapped to the 12 activities in descriptor language, ready to attach to your MR alongside the PA4 rebuttal.
Frequently asked questions
How do I get a copy of the PA4?
Ring DWP or write asking for a copy of the assessment report. It is free. Ask specifically for the 'PA4' (or PA5 for paper-based assessments). It usually arrives within 10 to 14 days.
What is snapshot bias?
The assessor treats one moment in the consultation as representative of every day. 'The claimant walked from the waiting room to the assessment room without visible distress' becomes 'able to mobilise 50m repeatedly'. It ignores fluctuation and the reliability test.
What are 'informal observations'?
Notes made about how you looked, sat, spoke, and moved during the consultation. Informal observations begin from the moment you enter (or the moment the call starts). They are heavily used by assessors and often misread neutral behaviour as evidence of capability.
Can informal observations be challenged?
Yes. Point to the reliability test: one observed moment does not show repeatability, safety, or acceptable standard over a typical day.
What if the report contains factual errors?
List each one in your MR letter: quote the report, state the correct fact, and reference supporting evidence. Factual errors that go to a scoring descriptor are strong grounds for reconsideration.
General information and document drafting, not benefits advice. Finally Seen is not affiliated with DWP or the NHS and does not guarantee any award. Check current guidance at gov.uk before sending.