Shooting has begun on London crime drama, with a cast including Leo Gregory, Ricci Harnet and Vincent Regan.

Principal photography has commenced on Top Dog, produced by Richwater Films, on location across London.

Directed by Martin Kemp (The Krays), it is produced by Jonathan Sothcott (Vendetta, Assassin) andwritten by Dougie Brimson, based on his original novel.

The cast includes Leo Gregory (Green Street, Cass), Ricci Harnett (28 Days Later, Rise Of The Foot Soldier), Vincent Regan (Bonded By Blood, Clash Of The Titans), Danielle Brent (Ill Manors), Lorraine Stanley (London To Brighton) and George Russo.

The film centres on hooligan gang leader Billy Evans (Gregory) who gets in over his head when he joins a dangerous criminal gang.

Universal Pictures UK, part of Universal Pictures International Entertainment - the home entertainment division of NBC Universal – has picked up the rights.