Ewan McGregor and Sophie Okonedo have signed on for the indie comedy "Scenes of a Sexual Nature," by screenwriter Aschlin Ditta and director Edward Blum, says Variety.

The ensemble comedy, which began shooting in late July is the first production for Mr. Blum's Tin Pan Films.

The story deals with "seven couples' relationships during one afternoon on Hampstead Heath in north London."

Also on board are Catherine Tate, Hugh Bonneville, Andrew Lincoln, Gina McKee, Eileen Atkins, Benjamin Whitrow, Douglas Hodge, Mark Strong, Polly Walker, Adrian Lester, Holly Aird and Tom Hardy.