A work by Peter Blake which is an auction item

The original pieces on offer at the auction range from pop art by Peter Blake to a work of graffiti art.

The auction is taking place at Christie's in London on Thursday evening, while bidding has already been started on the internet.

In 2003, War Child released a charity album which featured music from David Bowie and Sir Paul McCartney.

Works of photography will also feature in the sale, including Isaac Julien's clenched fist, which is a symbol of the whole show.

All proceeds from the auction will used to help children in the war-torn countries of Iraq, Afghanistan and the Democratic Republic of Congo.

The collection of works have been exhibited at two locations in the capital since the beginning of February.