Now, YP is no stranger to the old scam of giving the taxi driver a bit more cash to write out an inflated receipt to claim back on expenses. Not that we've done it ourselves, mind you, but we know that many other people do. It's just we never realised the growing number of people who try to fleece their employers when it comes to expenses.

A YouGov study estimates that a third of employees exaggerate expense claims, and it's a growing problem, with only a quarter fiddling figures six years ago.

The explanations given for this low-level corruption include not being paid a fair salary, not being reimbursed for all the costs incurred, and employers being too slow to reimburse staff. Of course, we're sure none of these apply to our honest, hard-working readers.