Just a bit of advice.
My bank card expires soon went to K Bank to renew today.
No she said you have a new passport. She needed my old passport as numbers are different to what you opened the account with. Go job I kept old passport. The banks aren't up to date with new uk passport. After further hour she finally clicked on UK passport she was trying to enter GBR ,in the end got it done ,keep your old passport for this.
TLDR : Answer Summary
An expat discusses their experience renewing a bank card at K Bank in Thailand after receiving a new UK passport. They advise keeping the old passport during this process, as banks may not be fully updated with the new passport information. Various commenters share similar experiences, emphasizing the importance of updating personal information with banks and keeping old passports for reference, particularly when changing from EU to UK passports.