When you and your landlord disagree about deductions, the scheme's free dispute service decides - DPS calls it ADR (alternative dispute resolution), TDS adjudication, MyDeposits arbitration. You never need a lawyer for it; you need evidence.
Custodial schemes: the disputed amount stays with the scheme - neither side can touch it - and the decision directs payment. Insurance schemes: the landlord holds the money during the dispute; if the adjudicator rules for you and the landlord then doesn't pay, the scheme's insurance layer pays and chases the landlord - that guarantee is the point of insurance protection.
The three dates that decide most disputes: the RESPONSE deadline to the deductions proposal (miss it = deemed acceptance), the evidence submission deadline, and the decision window (schemes aim for weeks, not months). Diarise all three the day the dispute opens; most 'lost' disputes were actually missed-deadline forfeits.
Typically you must respond to a proposed-deductions breakdown promptly - schemes commonly allow 7-14 days for responses (each scheme's portal states its exact window; verify when yours arrives). Miss the window and silence can be treated as acceptance, releasing funds to the landlord. Act the day the breakdown lands.
Respond through the scheme's portal: accept or dispute EACH proposed deduction, attach evidence per item (check-in/out reports, photos with dates, receipts, cleaning invoices, the inventory). Your response document should mirror their items line by line - agree what is fair, rebut what is not.
A formal adjudication on deductions: an independent adjudicator weighs the tenancy agreement, the inventories and each side's evidence against the legal test (is the landlord actually in loss? is it attributable to the tenant? is the amount reasonable?). Adjudicators decide on the documents - hearings do not happen.
Evidence beats eloquence. Winning submissions: a dated check-in inventory SIGNED by both parties, matching check-out evidence, receipts for anything you replaced, and a calm item-by-item rebuttal citing the inventory. Losing patterns: 'the flat was fine when I left' with no exhibits, or personal grievances - adjudicators cannot weigh them.
No deductions proposed at all? Skip adjudication and go straight to formal repayment (custodial: single-claim release) or letter before action (insurance schemes), then Money Claim Online. Adjudication only exists when there IS a deductions proposal to dispute.
10 days from tenancy end. Once a dispute is OPEN with the scheme, the disputed amount sits ring-fenced with the scheme until the decision - the 10-day clock is suspended for the disputed part only; any UNDISPUTED balance is still owed to you on time.