In the app / on the site
Use the bank's published complaint path first: barclays.co.uk/complaints.
Do this once, properly. Screenshot everything — you will attach it to the letter.
The escalation ladder
Phone / post / branch complaint
- 0800 282 390Official phone
- barclays.co.uk/complaintsCall 0800 282 390 (UK) or +44 (0)207 116 7488 (abroad); write Freepost Barclays Customer Relations; or visit a branch.
Financial Ombudsman Service
- 0800 023 4567Also 0300 123 9123; Exchange Tower, London E14 9SR.
- financial-ombudsman.org.ukAfter final response (or missed deadline), contact FOS within 6 months.
Regulator & ombudsman channels
- Financial Ombudsman Service (UK) https://www.financial-ombudsman.org.uk/ Within 6 months of bank final response letter (or after 8 weeks / payment-service deadlines).
Regulators almost always require proof that you complained to the company first. Attach your ticket numbers.
Public social channels
- No verified public social channel for complaints — we only list channels we can source.
Sources & verification
Every phone number, email and link on this page comes from these official pages, checked on 2026-11-04:
- barclays.co.uk/complaints
https://www.barclays.co.uk/complaints/ - financial-ombudsman.org.uk
https://www.financial-ombudsman.org.uk/