"He liked to complain about things: people at work, Harry, the council, Harry, the bank, and Harry were just a few of his favourite subjects. This morning, it was motorcycles..."
Vernon Dursley rants and raves[src]

This bank was found somewhere in Surrey in Great Britain (most likely in the village of Little Whinging). It is very likely that Vernon Dursley did his regular banking here, as this bank was one of his favourite topics of regular complaint.