I helped in moving the I.T. infrastructure of a large Bank into their new

at Canary Wharf, whilst the move was being implemented their was a discrepancy in the number of people being moved. It turned out that a member of staff we were supposed to be moving had left almost 5 years previously. The bank had been paying them £80K a year.
The member of staff had saved all the money in a high interest account with the same Bank.
He had to pay it back but the talk at the time was saying that if it had gone over 5 years they wouldn't have chased it.