Financial Ombudsman Service (FOS) Complaint — 2026 Guide

The bank made a mistake. The insurer refused your claim on technical grounds. The lender loaded you with a product that was never fit. The investment manager ignored your risk profile. The Financial Ombudsman Service is the free, binding route to fix it — and the difference between a successful and unsuccessful FOS complaint is almost entirely the quality of the drafting.

Who FOS covers

• Banks and building societies
• Credit card issuers
• Insurers (all types)
• Mortgage lenders and brokers
• Investment firms and fund managers
• Pension providers
• Consumer credit lenders, motor finance, PCP
• Payment services firms and e-money institutions
• Crowdfunding platforms

The 8-week rule

The firm has 8 weeks from the first complaint to issue a Final Response. If they do not, or if you receive a final response you reject, you have 6 months to bring the matter to FOS.

Structure — the Litigant Standard

1. Short chronology

Dated events. Numbered paragraphs. Evidence-anchored.

2. The regulatory breach

FCA Principles for Business. Specific rules — COBS (conduct of business), ICOBS (insurance conduct), MCOB (mortgages), CONC (consumer credit), DISP (dispute resolution). Pick the rules the firm broke and quote them. FOS adjudicators read complaints far more attentively when the regulatory hook is properly drafted.

3. The loss

Financial loss (quantified). Distress and inconvenience (FOS publishes awards guidance). Interest at 8% simple from the date loss crystallised.

4. The remedy

Specific. “Refund of £X. Correction of credit file. Compensation for distress and inconvenience in the band of [£X]. 8% interest from [date].”

The new mass-complaint landscape (2026)

The motor finance commission scandal has restructured FOS operations. Mass complaints (DCAs, PPI-era undisclosed commissions, unaffordable lending at scale) are handled in cohorts. Individual complaints still work — but the drafting must be distinctive enough to avoid being lumped into an automated response track.

Common complaint types

• Unaffordable lending — creditworthiness assessment failures under CONC
• Fraud recovery refusals — under PSR 2017 Contingent Reimbursement Model and 2024 APP fraud reimbursement rules
• Insurance claim refusals — non-disclosure, misrepresentation, “material contribution”
• Mortgage forbearance failures — MCOB 13 forbearance rules
• Pension transfer advice failures — DB pension transfers, insistent customers, suitability
• PCP motor finance — commission, affordability, voluntary termination rights

Can Chris draft the FOS complaint?

Yes. Upload statements, correspondence, the final response letter, any product documentation. Chris drafts the complaint with regulatory citations (FCA Handbook), loss calculation, distress banding, remedy sought, and supporting exhibit schedule. £30 per complaint. Claims management companies charge 30% plus VAT of your award for the same drafting. Chris keeps the full award in your pocket.

Prepare to win. Plan not to fail.

The FOS adjudicator is the Adjudicator in our Universal Principle. Chris drafts for their wavelength — regulatory, factual, remedy-specific.