McFly star Harry Judd cheered up sick kids in London on Tuesday (12Feb13) during a visit to a specialist cancer unit.

The drummer, who is an ambassador for the Teenage Cancer Trust charity, toured one of the organisation's units at a hospital in the British capital and met with young patients.

Judd took pictures of himself posing with the youngsters and posted them on his page as he documented the trip, writing, "Visiting a Teenage Cancer unit in London..."

He also encouraged fans to make donations to his fundraising campaign, during which he will tackle the upcoming London Marathon and a gruelling assault course to raise money for the Teenage Cancer Trust.

Judd's challenges will also benefit the Eyes Alight charity, which grants wishes for youngsters with brain injuries.