Impressionist, pianist, poet and star of The Big Impression Alistair McGowan takes us behind the scenes of his career. Along the way he does impressions of Louis Theroux, Harry Kane, Raymond Blanc, David Hockney, Alan Bennett, Alfred Hitchcock, Frank Skinner, Richard Madeley, Alan Shearer, Jo Brand, Dara Ó Briain, Monty Don, Gareth Southgate, Ronnie Corbett, Sven-Göran Eriksson, John Bishop, David Beckham, Ian McKellen, Martin O'Neill, Alan Hansen, Philip Mould, John Major, John Smith, Paddy Ashdown, Gordon Brown, John Parrot and Mikel Arteta.