Keep your employment contract, recent payslips, redundancy or dismissal letters, consultation notes, and any emails about your role ending. You may also need records of your start date, hours, holiday entitlement, bonuses and workplace pension, as these can affect what your employer calculates. Keep copies of your own correspondence and details of any settlement agreement, but do not sign one without understanding it; consider advice from an employment solicitor or trade union. You can also check the latest guidance on redundancy and statutory payments on GOV.UK and Acas.