You can ask the Department for Work and Pensions (DWP) for a mandatory reconsideration, usually within one month of the date on your decision letter. Explain why you disagree and include any relevant medical evidence or information about how your condition affects daily living and mobility. If the decision stays the same, you may be able to appeal to an independent First-tier Tribunal, normally within one month of the mandatory reconsideration notice. Check the latest guidance on GOV.UK and consider getting help from Citizens Advice or a welfare rights adviser.