I remember being "conned" into opening a LLoyds Current Account in Basic training (FAA). The Navy had full access at the time on any account information eg overdrafts etc.
A year or so later I was summonsed to the UPO to answer why I was in debt to LLoyds bank (I had an unauthorised overdraft after a great 1st run ashore in Palma) as it is (was) an offence to be in debt in the RN....
I paid off the overdraft closed the account and have never stepped into a Lloyds bank since....
The Navy used to have an arrangement with LLoyds Bank in Plymouth, Portsmouth and Portland. Which meant they knew all about junior ratings finances (good or bad). I am not sure if this was an official arrangement or a localised thing....
BTW it was before all the palava of Data Protection etc....