Manchester United players such as Rio Ferdinand and Wayne Rooney star in a new comedy video to raise money for the Sport Relief charity in Britain.

The new video (see excerpt above) features Smithy (the Gavin & Stacey character played by James Corden) leading the players in a workout routine (Richard Simmons, watch out). Rio Ferdinand gets a couple of words of encouragement from Smithy before Rooney and Smithy get face-to-face in a laughable sing-song.

The full clip from the video will be shown on BBC on March 19.