David Walliams risks Simon Cowell's wrath as he mocks 'short' star

Simon Cowell threatens to axe David Walliams from Britain's Got

Simon Cowell: Latest news, views, gossip, photos and video - Page

Brave Simon Cowell is back on his bike on ride with girlfriend

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David Walliams risks Simon Cowell's wrath as he mocks 'short' star

Simon Cowell: Latest news, views, gossip, photos and video - Page

Brave Simon Cowell is back on his bike on ride with girlfriend

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Simon Cowell 'exploded' at David Walliams for making willy joke on Britain's Got Talent

Simon Cowell wrestles David Walliams as Britain's Got Talent