Originally Posted by
mshaikun
I have heard that airport ATM's do not give good rates but have never checked to see if this is true.
If the ATM is provided by a bank you get the interbank rate or the visa rate - plus whatever charges your bank decides to impose.
If it isn't (eg any at T5 LHR) then you'll get whatever rate they want to give you plus your bank charges PLUS an additional charge for the owner of the ATM.
ie exactly the same rules for any ATM in the UK.