Keira Knightley to act in mum's movie.

Keira Knightley has found time to play a part in a movie written by her mother. The news comes after concerns the Oscar-nominee would not be able to fit The Best Time Of Our Lives into her schedule, despite being keen to work with her playwright mother Sharman Macdonald.

Filming was set for this summer but has been delayed until next January to accommodate Knightley. The movie is about a bizarre episode in 1945 when a fried of Dylan Thomas shot with a machine gun at the poet's house. It looks at the background to the incident, with Knightley playing Thomas' wife Caitlin.