Winstone and Knightley to play lovers

Ray Winstone and Keira Knightley are set to play unlikely lovers in a new gangster movie.

The pair have signed to star alongside Colin Farrell and Anna Friel in 'London Boulevard', 'The Departed' screenwriter William Monahan's directorial debut.

Winstone will play a criminal who is released from prison and becomes romantically involved with a reclusive actress, played by Knightley.

It's not the first time the British pair has shared the big screen - they were co-stars in 2004 film 'King Arthur'.

The new movie will begin shooting in the British capital this summer