Yes piggy - we have several on-line accounts, you can do most things - transfer money, pay bills and credit cards, check your balances, set up standing orders, cancel direct debits, change passwords - and so on.
(The only thing we have to go to our branch for is to pay cash and cheques in - we find they don't reach our account if we stuff 'em in the USB port.)
The worst thing I've had go wrong is to forget my passwords, if you put the wrong one in more than 3 times it locks you out, then you have to phone them and they send new access data in the post.