Make a complaint

We’re sorry if things haven’t gone as you expected. Please let us know – we want to work with you to understand what’s happened and put it right. If you don’t wish to register a complaint, you can give us feedback instead.

Ways to contact us

Chat to us

Lady using laptop

The quickest way to get in touch is to message us through our online chat. One of our advisers can talk through your concerns to help put things right.

To start a chat, press the blue 'Chat to us' button in the bottom of your screen during our operating hours.

Useful information

Monday to Friday: 9am - 5pm

Call us

0800 30 20 15 (UK landline)
+44 1793 65 67 89 (Abroad)

Useful information

Monday to Friday: 8am - 6pm

Visit us in branch

If you’d like to speak to one of our team in person, you can come and see us in branch. Use our branch finder to find your nearest branch.


Branch finder

Write to us

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

What do include in your letter

You’ll need to tell us your name, address and account details. We’ll also need to know what’s gone wrong, when it happened and what you’d like us to do to put it right. If you’re happy for us to contact you by telephone, please include a daytime contact number.