It is a myth that 'getting one over on the system' is a victimless crime: the truth is we all pay the price.
It is vital that we take a tough stance on this type of fraud and I am determined to see a clampdown on those who flout the system.
More top news
Nearly 38,000 runners will hope to complete Sunday's London Marathon making it the biggest event in its 35-year history.
Rain across central Britain with longer, intense downpours with thunder in places this evening. A lucky few will stay sunny and dry.
Planning on going to the London Marathon tomorrow? Read our handy guide first!