Who Wants to Be a Millionaire Celebrity Easter Special: Everything you need to know...

Osman is well known as something of a general knowledge aficionado thanks to his role on Pointless alongside Alexander Armstrong, while he is also the host of quiz shows Two Tribes and Richard Osman's House of Games. He's also a producer on a range of other shows.

Barnes was regarded as one of the finest English footballers of his generation — winning 79 international caps and winning two league titles at Liverpool as well as playing for Watford, Newcastle United and Charlton Athletic.

Church rose to fame as a child classical music singer and later branched into pop music, while she has also worked as a television presenter.

All three celebrities will be aiming to win as much money as possible for a charity of their choice by answering 15 multiple choice questions — up to the highest possible amount of £1,000,000.

Who Wants to Be a Millionaire originally ran from 1998-2004 with Chris Tarrant as presenter and became one of the most iconic quiz shows in British TV history.

It returned for a week of special programmes in 2018 to mark the show's 20th anniversary, with Clarkson replacing Tarrant, and has since ran for a further four series.

• John Barnes drops huge hint he wants to go on I’m A Celebrity ahead of Who Wants to Be A Millionaire appearance

The new celebrity special of Who Wants to Be a Millionaire will air on ITV on Sunday 12th April at 7pm. To keep up to date with all the latest programming, check out our TV Guide.