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Mandatory Reconsideration — How to Challenge a Benefit Decision

If DWP has refused your benefit claim, reduced your payments, or sanctioned you, you have the right to ask them to look at the decision again. This is called a Mandatory Reconsideration (MR). You must request one before you can appeal to a tribunal. The deadline is strict — act quickly.

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What is a Mandatory Reconsideration?

A Mandatory Reconsideration is a formal request for DWP to look at a decision again. A different decision-maker reviews the case — they can uphold the original decision, change it in your favour, or make it worse (though worsening is rare).

The MR is required by law before you can appeal to the Social Security and Child Support Tribunal. You cannot skip it. If you go straight to tribunal without an MR, your appeal will be rejected.

Most MRs result in the original decision being upheld — but an unsuccessful MR still gives you the right to tribunal, where the success rate is significantly higher.

The deadline — this is critical

You have one calendar month from the date on your decision letter to request a Mandatory Reconsideration. If you miss this deadline, DWP can refuse to consider your request. Act as soon as possible.

If you have missed the deadline, you can still request a late MR — but you must have a good reason for the delay. Acceptable reasons include:

  • Serious illness preventing you from acting
  • A bereavement in your close family
  • You did not receive the decision letter
  • You sought advice and were given incorrect information causing the delay

How to request a Mandatory Reconsideration

1
Get a copy of your decision letter
You'll need the date of the decision and the reference number. If you've lost it, call DWP and ask for a copy.
2
Contact DWP to request the MR
You can phone your UC service centre, write a letter, or submit via your online journal. Writing is strongly recommended — it creates a record and forces you to set out your argument clearly.
3
State clearly that you are requesting a Mandatory Reconsideration
Use those exact words. Say you disagree with the decision dated [date] and give your National Insurance number and claim reference.
4
Give your reasons
Explain why the decision is wrong. Reference the relevant criteria (PIP descriptors, UC regulations, medical evidence). Be specific — vague disagreement is rarely successful.
5
Include supporting evidence
Medical letters, reports from GPs or specialists, letters from carers or social workers, or any documents that weren't considered in the original decision. New evidence can be submitted at MR stage.
6
Keep copies of everything
Record the date you sent the request and how (phone reference number, postal tracking, online journal message ID). You may need this later.

What happens after you request an MR?

DWP should send you a Mandatory Reconsideration Notice (MRN) within a few weeks, though it can take longer. The notice will either:

  • Uphold the original decision — you can now appeal to tribunal
  • Change the decision in your favour — your benefit is corrected
  • Change the decision in another way (rare)
If DWP doesn't send an MRN within 4 weeks, you can contact them to ask for an update. There is no statutory time limit for DWP to complete an MR, but unreasonable delay can be complained about.

Once you receive your MRN, you have one month to appeal to the First-tier Tribunal if you want to take it further. Keep your MRN safe — you'll need it to appeal.

Writing an effective MR letter

A good MR letter is specific, evidence-based, and references the decision-making criteria. For each reason you disagree with the decision:

  • State the specific descriptor or criterion you believe has been applied incorrectly
  • Explain what the correct application should be and why
  • Reference any supporting evidence (attach it or state it was previously submitted)
  • If it's a PIP decision, go through each activity and descriptor point by point
  • If it's a UC sanction, explain the reason you had for not meeting the commitment
Ash can help you draft an MR letter specific to your situation. It will be structured to the correct legal standard and reference the relevant regulations and descriptors.

Get advice about your specific situation

Ash is a free UK guidance assistant. Ask about your rights, get step-by-step guidance, and generate a formal letter if you need one.

Talk to Ash — it's free

No sign-up · No account · Works for England, Scotland, Wales & Northern Ireland

Related guides

Benefits Appeals
Taking your MR to the First-tier Tribunal if it's unsuccessful.
Universal Credit
Full UC guide including what to do when claims go wrong.
PIP
PIP decisions and how to challenge them.