If things haven't gone as you expected or you’re unhappy with something we did, please let us know. We’ll work with you to understand what happened and do our best to put it right.

How to make a complaint

If you’d like to make a complaint, the quickest way is to message us through our online chat. You can also contact us by phone, letter or visiting your nearest branch.

Chat with us

One of our advisers can talk through your concerns to help put things right.

To start a chat, press the blue 'Chat with us' button in the bottom of your screen.

Our live chat, for complaints, is available 24 hours a day, 7 days a week.

Call our freephone number

Monday to Friday, 8am to 6pm.
Saturday, 9am to 12:30pm.
Closed Sundays and bank holidays.

Visit us in branch

If you would like to speak to one of our team in person, come and see us in branch.

Write to us

If you’d like to write to us please include:

  • Your name
  • Your address
  • Your account details
  • A contact number, if you’re happy for us to call you
  • What has happened
  • When it happened.

Please send your letter to:

The Complaints Team
Nationwide Building Society
NW 2020
Swindon, SN38 1NW

Relay UK

Used to be known as Text Relay. Offers confidential text-to-speech and speech-to-text services for those who struggle to use the phone.

You'll need the Relay UK app or a textphone. Dial 18001 followed by the Nationwide number you want to call. The opening hours will be next to the number.

Using SignVideo

Use SignVideo to make British Sign Language (BSL) interpreted calls with a qualified and registered (NRCPD/SASLI) interpreter.

Monday to Friday, 8am to 6pm.
Closed weekends and bank holidays.

The complaints process

We’re committed to resolving complaints and helping make things right for our members. We’ll make every effort to resolve a payment transaction complaint as soon as possible and by no later than 15 days or, in exceptional circumstances, 35 days. Where a complaint relates to any other matter, please allow up to 56 days. We’ll keep you informed of our progress throughout.

Receiving information in an alternative format

We can send complaints communications to you in large print, audio CDs or braille. If you would like to receive communications in any of these formats, please inform us of this when making your complaint. You can learn more about all our accessibility options on our help page.

Depending on how long it takes to resolve your complaint, you’ll receive one of the following communications from us:

Summary Resolution Communication

You’ll receive this if we’ve been able to resolve your complaint to your satisfaction within 3 working days following the day we received your complaint. We’ll also tell you about the Financial Ombudsman Service (FOS), should you wish to take matters further.

Final Response

We’ll try to resolve your complaint within 3 working days. If that’s not possible, we’ll send a letter acknowledging the issue. And of course, we'll keep you updated on the progress.

Once we’ve resolved your complaint to the best of our ability you’ll receive a Final Response letter which covers:

  • Details of our investigation
  • Our decision
  • If applicable, next steps
  • Information about the Financial Ombudsman.

Complaints data

Your feedback is important to us as it gives us an opportunity to improve. If you’d like to know more about the complaints we receive, you can find more by visiting our complaints data page.

How to take your complaint further

If you're unhappy with our decision and wish to take your complaint further, you can ask the Financial Ombudsman Service (FOS) to review your complaint. This is a free, independent service for resolving such disputes.

You can refer your complaint to the FOS at any time. But they’ll need our consent to investigate complaints if we haven’t:

  • Had the chance to put things right
  • Exceeded the handling timescales permitted for your complaint.

If you want to refer your complaint after we've issued our Final Response, you must do it within 6 months of the date on the letter.

Ways to contact the Financial Ombudsman Service


Monday to Friday: 8am to 5pm
Saturday: 9am to 1pm


Financial Ombudsman Service
Exchange Tower
London, E14 9SR

Give us feedback

Seen something that’s not working or could be improved? We want to hear about it.

Your feedback is valuable to us. Although we can’t always contact you directly, we use your views to shape the way we work as well as the products and services we offer.

If you’d like to get in touch, please use our feedback form.

Please don't use this form for account-related requests.

For further details about how we use your information, please visit our privacy page.