This page explains how to let us know when someone has died and what happens to the mortgage in their name.
For buy to let mortgages
The Mortgage Works is the specialist buy to let lender of Nationwide Building Society. Nationwide has a central bereavement team who look after multiple products, including mortgages with The Mortgage Works. This means in the event of a bereavement, you will only need to notify Nationwide and all products in their name will be updated.
You can find out how to do this on Nationwide's dedicated bereavement page.