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Jamie and Andy Murray will star in a Some Mothers Do 'Ave 'Em sketch with Michael CrawfordSport Relief/BBC

Andy Murray fans are sure to make a racket when they see his cameo on the hit comedy Some Mothers Do 'Ave 'Em for Sport Relief 2016. The champion tennis player will join a group of elite sports people in a side-splitting sketch for the BBC fundraiser on tonight's programme (18 March). Ace!

Some Mothers Do 'Ave 'Em's Betty (Michelle Dotrice) and Frank (Michael Crawford) will reunite amid a league of celebrities while rollerskating around the Velodrome. Murray – the world's number-two ranked tennis player – will make his debut in the spoof alongside older brother Jamie Murray, England manager Roy Hodgson and Arensal boss Arsène Wenger. Things are going to get competitive.

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Michael Crawford wears his beret alongside Jenson Button for the BBC spoofSport Relief/BBC

Crawford, 74, last wore his famous beret to play disaster-prone Frank in a 1978 Christmas special of the treasured sitcom. The celebrity-laden segments, which sees Quantum of Solace's Gemma Arterton play Frank and Betty's daughter, are part of a star-studded weekend of fundraising for Sport Relief on the BBC – but this unique sketch is most definitely worth a watch.

The live extravaganza will be broadcast from London's Queen Elizabeth Olympic Park and presented by top names in sport and showbusiness. Little Britain character Emily Howard will also be revived by comedian David Walliams in a sketch with Stoke City football player Peter Crouch who dresses up in drag.

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David Walliams and Stoke City player Peter Crouch dress up in drag for the hilarious Little Britain sketch for Sport Relief 2016Sport Relief/BBC

The evening will also see Idris Elba star as Luther in a one-off sketch with Ruth Wilson where he'll wear his character's famous overcoat to uncover a serious case of hilarity with Wilson – who plays arch enemy Alice Morgan in the BBC1 crime drama. The super sleuth Detective Chief Inspector John Luther (Elba) will be joined by Sir Lenny Henry, former England footballers Rio Ferdinand and Ian Wright, boxer David Haye and Olympians Denise Lewis and Louis Smith. Bursting at the seams with sporting legends.

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James Bay will perform on tonight's BBC Sport Relief 2016 (18 March)Sport Relief/BBC

Also on offer is Take Me Out's Paddy McGuinness and McFly's Harry Judd who go head-to-head in a wrestling match while Russell Kane and Will Young embark on a synchronised swimming routine. James Bay performs the official Sport Relief 2016 single with his trademark hat and long hair in tow while Birdy also sings live on the night. Among the farce and revelry, viewers will also be reminded why Sport Relief is appealing for money with a series of films as the charity endeavours to change the lives of people around the world as well as in the UK.

Watch all of the action and more unfold on BBC1 tonight at 7pm (18 March).