In the app / on the site
Use the bank's published complaint path first: natwest.com/support-centre/how-to-complain.html.
Do this once, properly. Screenshot everything — you will attach it to the letter.
The escalation ladder
App / phone / post
- 03457 888 444Premier 0333 202 3330. Use contact details in acknowledgement for updates.
- natwest.com/support-centre/how-to-complain.htmlRaise via NatWest app or Ask Cora; personal accounts 03457 888 444; credit cards 0370 333 9091; post PO Box 5427, Southend-on-Sea, SS1 9AJ.
Financial Ombudsman Service
- 0800 023 4567Official phone
- financial-ombudsman.org.ukIf unresolved in 8 weeks or unsatisfied with resolution, contact FOS within 6 months of final response letter.
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:
- natwest.com/support-centre/how-to-complain.html
https://www.natwest.com/support-centre/how-to-complain.html - financial-ombudsman.org.uk
https://www.financial-ombudsman.org.uk/