Evidence that actually wins PIP cases
The strongest evidence is not always the most expensive. A consultant letter carries weight, but a well-written personal statement can do as much — and it is free.
On this page
The principle that explains everything
PIP assesses functional impact, not diagnosis. The DWP already knows what condition you have — you told them on the form. What it does not know, unless you tell it, is what that condition actually stops you doing.
Weak evidence
"I confirm that Mrs Smith has fibromyalgia and is prescribed pregabalin and amitriptyline."
This confirms a diagnosis the DWP already has. It adds nothing to the score.
Strong evidence
"Widespread pain and fatigue mean she typically cannot stand for more than five minutes. She cannot prepare a meal because holding a pan or standing at the cooker causes pain to flare. She cannot wash or dress without physical assistance, particularly in the first two to three hours after waking. While she may occasionally manage a short walk, she cannot do this repeatedly or safely — she has fallen three times in six months due to dizziness from her medication."
The second version describes what she cannot do, why, whether she can do it reliably, and what happens as a consequence. That is what scores points.
The evidence hierarchy
| Evidence | Who provides it | Weight | Cost |
|---|---|---|---|
| Consultant or specialist report | Hospital consultant or psychiatrist | Very high | Often free |
| Community mental health records | CPN, psychiatrist, social worker | Very high | Free |
| Occupational therapy report | NHS or private OT | High | Free NHS / £150–£400 private |
| GP letter describing function | Your GP | High | £25–£100, sometimes free |
| Your own statement or diary | You | High | Free |
| Prescription records | GP surgery or NHS App | Medium–high | Free |
| Statement from a carer or relative | Partner, carer, support worker | Medium–high | Free |
| Care plan or social services records | Local authority | Medium | Free |
| Photographs or video | You or your carer | Medium | Free |
| GP letter confirming diagnosis only | Your GP | Low | — |
| General factsheets about your condition | Charities or NHS websites | Very low | Free |
The practical takeaway. A consultant's functional letter outweighs a GP letter — but the most common route to a successful claim runs through a personal statement, a carer's statement and existing GP records, none of which cost anything.
Getting a GP letter
GPs are not obliged to write these letters. It is private, non-NHS work, and they set their own fee — typically £25 to £100, occasionally more, sometimes nothing at all for a benefits letter. Always ask about the fee before requesting one.
How to approach your GP
- Book a routine appointmentDo not raise it at reception or in passing. Ask for a longer or double appointment if your surgery offers them.
- Take a structured requestA short document listing the specific PIP activities you find difficult and what you struggle with on each. This saves the GP time and produces a far better letter.
- Explain what the letter has to doTell them directly: "The DWP assesses whether I can do things safely, repeatedly, to an acceptable standard, and in a reasonable time. The letter needs to describe impact, not just my diagnosis."
- Ask them to send it to you, not the DWPYou should read it before it is submitted. A letter that inadvertently undermines you is worse than no letter at all.
- Do not delay your form while you waitSend the PIP2 on time and submit the letter separately afterwards. Late forms cause far more damage than a delayed letter.
What a good GP letter contains
| Element | Weak | Strong |
|---|---|---|
| Opening | "I confirm Mr Smith has fibromyalgia." | "I have been Mr Smith's GP for seven years. He has fibromyalgia, chronic fatigue syndrome and depression, which together severely limit his daily functioning." |
| Detail | "His condition causes pain and fatigue." | "He typically cannot stand for more than five minutes. Holding a pan causes pain to flare, so he cannot prepare a meal." |
| PIP relevance | No mention of activities. | "He cannot wash or dress without physical assistance, due to joint stiffness worst in the first two to three hours after waking." |
| Reliability | Not addressed. | "While he may occasionally manage a short walk of 20 metres, he cannot do this repeatedly or safely — he has fallen three times in six months due to dizziness from his medication." |
| Medication | "Prescribed pregabalin and amitriptyline." | "Pregabalin 300mg twice daily and amitriptyline 50mg at night. The amitriptyline causes significant morning drowsiness, further limiting activities before midday." |
| Fluctuation | Not mentioned. | "On more than half of days she experiences the pattern described above. She has perhaps two better days a week, on which she still cannot manage the heavier tasks." |
If your GP refuses or charges more than you can afford
- Request your medical records instead. You have a free legal right to them under UK GDPR, and the practice must respond within one calendar month. The NHS App usually gives you consultation notes, test results, referral letters and prescription history immediately.
- Ask for copies of hospital letters. Your surgery holds a copy of every consultant letter as part of your record. These are often free and carry more weight than a GP letter.
- Write a strong personal statement. Tribunals can decide on your own evidence alone. CPAG's guidance is explicit that a claimant's statement does not have to be supported by other evidence to be accepted.
- Ask the people who help you. A statement from a partner or carer costs nothing and describes things no clinician sees.
Writing your personal statement
This is the most underrated piece of evidence in the entire process, and it is free. Tribunals want to hear from you about your actual life.
Structure it around the twelve activities. For each one where you struggle, cover five things:
- What happens when you try — "I can't stand at the cooker for more than three minutes because of lower back pain."
- What help you need — "My partner cooks all the hot meals. I can make a sandwich if I sit down."
- What goes wrong — "Last month I dropped a pan of pasta because my hands went numb and burned my arm."
- How often — "This happens every day, not only on bad days."
- How it affects you — "It makes me feel frustrated and dependent. I used to love cooking."
A note on tone. Be honest and specific rather than emotional. "This is so unfair" persuades nobody. "Getting dressed takes forty minutes and my partner has to fasten my bra and put my socks on" is what changes a decision. Understatement is far more common than exaggeration, and it is the bigger risk.
Keeping a symptom diary
A diary is the single best way of demonstrating a fluctuating condition and proving the 50% rule. It is also the easiest strong evidence to produce.
How long
Seven days is the minimum worth having. Fourteen days gives a representative picture and is what most advisers recommend. Four weeks is better still if your condition cycles over a longer period.
How to record it
One page per day, filled in during the evening. Brief notes during the day — even a few words on your phone — are fine. If you cannot write it yourself, a carer can keep it and should sign and date it.
What to record, and why
| Always record | Because it proves |
|---|---|
| Safety incidents — near-falls, burns, leaving the hob on, slipping in the shower | The "safely" limb of the reliability test. Under Regulation 4, if you cannot do something safely you are treated as unable to do it at all. |
| Time taken — "getting dressed took 35 minutes" | The "reasonable time" limb. More than twice as long as someone without your condition means you are treated as unable to do it. |
| Help received — who helped and with exactly what | Directly maps onto descriptors for prompting, supervision and physical assistance. |
| What you could not do — things abandoned or avoided | Activities you avoid entirely still count. "I couldn't leave the house" is evidence for Mobility. |
| The aftermath — "after walking to the shop I was in bed for three hours" | The "repeatedly" limb. If doing something once means you can do nothing else all day, you are not doing it repeatedly. |
Do not write essays. Short, specific entries are more persuasive. "Getting dressed took 35 minutes. Partner had to fasten my bra and put my socks on. Fingers too stiff for buttons" beats three paragraphs of description.
Include better days. Honesty makes a diary more credible, not less. A diary that records only catastrophes looks constructed; one that shows a genuine pattern with two better days a week is far more persuasive.
A worked entry
Tuesday 14 January — bad day
Woke at 6am with lower back pain and stiffness. Took twenty minutes to get out of bed; partner had to help me sit up. Shower with the seat and grab rails took about 35 minutes. Could not wash my own hair — partner did it. Dressing took 40 minutes; partner fastened my bra and put my socks on. Fingers too stiff for buttons. Nearly slipped getting out of the shower. Could not prepare anything — partner made lunch. Did not leave the house. Dropped a mug and burned my hand with hot water around 3pm. In bed by 7pm, slept badly.
Note the safety incidents, the times, the help received, the things not done, and the fact that a better day is recorded separately.
Proving the reliability test
This is where most claimants under-argue. Take each limb of Regulation 4(2A) and attach evidence to it explicitly.
| Limb | How to evidence it |
|---|---|
| Safely | "I have burned myself twice on the cooker this year" — supported by GP letter and any A&E records. "My CPN has to be present when I shower because I hear louder voices in the bathroom." |
| Acceptable standard | "I get dressed, but I often put clothes on inside out and cannot tell during a depressive episode." |
| Repeatedly | "I can walk 30 metres once, then I need twenty minutes' rest — so I cannot do the return trip to the car and back." |
| Reasonable time | "Washing and dressing takes over an hour every morning, against about fifteen minutes for most people." |
Getting your records, free of charge
You have a legal right to a copy of your medical records under UK GDPR. Your GP practice must provide them free of charge within one calendar month. Raise any charge with the Information Commissioner's Office.
Fastest route
The NHS App. Most practices allow full record viewing, giving you consultation notes, test results, referral letters and prescription history immediately.
Full printed copy
Write to the practice requesting a copy under UK GDPR. Be specific — you can ask for only the last two or three years, or for condition-specific records, which is usually enough.
From the DWP
You can request the personal information the DWP holds, including the assessor's report, using their online personal information request form. Useful for challenging what the assessor recorded.
Consent
When you claim PIP you are asked whether the DWP may contact health professionals. It is optional. Without your consent the DWP decides on the information it already has, which is often to your disadvantage.
Presenting your evidence
- Add a front pageYour name, date of birth, National Insurance number and a list of everything included.
- Number every pageTop right corner. This lets you cite a page number in your written reasons, which is enormously helpful to a tribunal working through a 100-page bundle.
- Order it logicallyPersonal statement, then diary, then GP letter, then consultant letters most recent first, then prescription records, then supporting statements, then anything else.
- Put your name and National Insurance number on every pageIn case documents get separated.
- Photocopy everythingThe DWP does not return originals.
- Send by tracked postAnd keep the receipt.
- Send evidence as it arrivesDo not sit on it waiting for a complete set. Later evidence is fine, but last-minute evidence before a hearing can force an adjournment.
What not to include. General factsheets about your condition, evidence unrelated to daily living impact, duplicated documents, and material from many years ago unless it establishes a pattern. CPAG's guidance is blunt on this: irrelevant information risks weakening your case by diverting attention from your strongest arguments.
Evidence by condition type
Mental health
Community mental health team letters, CPN notes, psychiatrist reports, psychological therapy records, crisis team records, and a diary showing symptom variation. Do not rely on diagnosis alone — "the patient has depression" tells an assessor nothing, whereas "cannot leave the house alone on most days and requires her partner to accompany her on any journey" scores points.
Physical and musculoskeletal
Consultant letters with specific findings such as range of movement and walking distance tests, physiotherapy and OT reports, pain clinic records, and photographs of mobility aids or adaptations. Numbers matter: "can walk approximately 20 metres on the flat before needing to stop, using a walking stick" beats "can't walk far" by a wide margin.
Neurological and learning disability
Neurologist and neuropsychologist reports, educational psychologist assessments, OT reports, speech and language therapy reports, and care plans. Focus on how cognitive symptoms affect understanding, communication and safety — not only physical function.
Autism and ADHD
Diagnostic assessment reports, occupational therapy reports, school or university support records, and statements from family or carers. These matter especially for autistic claimants because masking — presenting as more capable than you are — is now recognised as relevant, and someone who sees you at home can describe what the assessor never sees.
Chronic pain and fatigue
Rheumatology and consultant letters, physiotherapy records, pain clinic reports, and a diary covering two to four weeks that records good and bad days separately and what you could not do on each.
Fluctuating conditions
The diary is the evidence here. Record the proportion of bad days honestly, and describe what a bad day involves in concrete terms. Where two descriptors apply on different days, set out both and give the approximate proportion of days each describes.
Evidence assembled but not sure it makes the point?
Send us what you have. We will tell you which descriptors it supports, which arguments are missing, and whether the evidence you hold is enough to win.
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