What made you choose the bank you're with at present?
Originally I went with HSBC, because I needed a business account and figured I may as well set up a personal one while I was there. Because it was easy to transfer cash across, and also cash cheques for both in one place, it became my main account.
Since I moved to Scotland though it's been an issue, because currently HSBC only have 3 branches in Scotland - I have to take a 50 min train journey to cash cheques now for my personal account.
I'm assured that HSBC are opening over a dozen new branches over the next 2 years across Scotland, though, which should be helpful.