First Direct and HSBC
First Direct is a division of HSBC UK, but it runs its own name change process through chat. If you have HSBC accounts too, HSBC has its own route: a branch visit with proof of the change and of your previous name. See our guide to changing your name with HSBC UK.
First Direct’s help page doesn’t give a timescale for a name change. For anything else, its number is 03 456 100 100.