You’d be displeased that their debit card is Visa, not Mastercard!
They used to be able to introduce you to Amex cards, if you wanted a credit card, although I’m not sure if they still offer that. Their debit card used to be “deferred debit”, where it acted a bit like a charge card (all charges bundled and charged to your account at the end of the month) but that feature was removed a while ago.
Nowadays, they are similar to high level Santander (Santander Select and Santander Private Banking) just without an app.
Their USP is specialist banking for trusts, executor’s accounts, etc and also they are the only part of Santander that offers currency accounts (in Euros and US Dollars). I believe there is no branch access at Santander, as Cater Allen is largely run separately but does share some group back-office functions.
There is a freephone telephone line to call them, and the ability to send and receive secure messages through internet banking.
You can have a chequebook, paying-in book and debit card (if you want); currency accounts only offer a debit card and don’t support cheques.
The account shows on your credit report as a standard Santander account.