A locksmith sees pound signs when he is put in charge of a London hospital - and pockets nearly half a million pounds by overcharging the hospital for supplies. Elsewhere, an NHS manager dreams up a scam to siphon over £800,000 of NHS money into his own account.

Investigators crack the case of an accounts worker at the Royal Marsden cancer hospital who is siphoning off £642,000 of NHS money into personal bank accounts belonging to her boyfriend and his associates. Plus the case of a GP practice manager who pocketed thousands of pounds by faking emails to award himself a pay rise.