A record number of original works by Banksy are to be put up for auction at Bonham's in London.

Some of the artist's early work will be on sale, including this piece, Avon and Somerset Constabulary - expected to fetch up to �80,000.

The collection contains mostly spray-paint stencils and the works are painted on a selection of canvas, board and metal.

This controversial screen print consists of a series of �10 notes where the Queen's head has been replaced by the head of Princess Diana.

Another highlight of the auction is the controversial work Lenin on Roller-skates (Who Put The Revolution On Ice?) depicting the Russian revolutionary.

Banksy, who remains secretive about his work, is no stranger to controversy and has gained a reputation for trying to outwit the authorities.

It is estimated that the 10 original works could fetch up to �300,000 in total.