Posted: Mon Feb 04, 2008 12:36 am-
I can't really speak for exchange rates and such, however I know alot of americans and canadians have encountered problems using their debit card in the UK. This is mostly due to the fact that the uk is largely switching over to chip and pin cards, and not all atms can accept cards that do not have a chip.
One of my friends got her card stuck in a machine and had to wait until the security personal came to empty / restock the machine in order to get it back.
The Bank in the UK which seems to be consistently 'foreign' atm card friendly is Abbey.
I've used both my UK atm cards and Canadian Atm cards in France and Italy as with no problems as long as I was using an atm which had one of the logos on the back of the card on it.
I use RBC in canada, and have found the rates are pretty good. I think there is a $5 per transaction fee but I've never noticed it.
Hope that helps.