Here they are, the three political titans at the heart of Channel 4’s drama about the tortured negotiations following the 2010 general election.
Written by James Graham – the playwright behind stage political hits Privacy, This House and Tory Boyz – Coalition charts the “often frenzied moments” of the coalition negotiations after the electorate delivered a hung Parliament.
The part of Clegg is played by Bertie Carvel, last seen as the wily public relations executive Finn in Channel 4’s police drama Babylon.
Mark Dexter (The Bletchley Circle, Ripper Street) is David Cameron and Ian Grieve has taken on the role of Gordon Brown, a part he performed in the stage play The Confessions of Gordon Brown.
Doctor Who and Sherlock star Mark Gatiss plays the wily New Labour spin doctor Peter Mandelson in the film which C4 says will offer a “penetrating insight into one of the most influential and significant political decisions of recent years”.
The one-off drama also aims to chart the “astonishing rise” of Clegg, a “rank outsider” who became the man who “would decide the fate of the country” after the 2010 election failed to produce a winning party, according to C4.
Clegg eventually joined forces in a coalition with the Tories, spurning Brown’s Labour government.
Bafta-winning Alex Holmes (Dunkirk, House of Saddam) has directed the film, which will air this spring.