Supply and Demand is the 509th episode of The Bill.
The new anti-burglary initiative Operation Bumblebee is up and running at Sun Hill. D.S. Greig, P.C. Quinnan and W.P.C. Ackland are part of the team, while W.P.C. Harris is the analyst. When a supposedly pornographic home video of a housewife in a bubble bath is handed in to the front desk, Greig and the Bumblebee team are led to an electrical shop filled with stolen goods.