Career: Hawkins made guest appearances in TV shows Casualty and Doctors but her first break in front of the camera came in Mike Leigh's film All or Nothing (2002). Since then, she has starred in Vera Drake (2004), Layer Cake (2004), The Painted Veil (2006) and Cassandra's Dream (2007). She won a number of awards, including a Golden Globe, for her portrayal of Poppy Cross in Happy-Go-Lucky (2008). Her other film credits include An Education (2009), Never Let Me Go (2010), Made in Dagenham (2010), Submarine (2010), Blue Jasmine (2013) and Godzilla (2014).

Career: Thewlis had a number of minor roles in films and TV series, including an episode of Only Fools and Horses, until he landed his breakout role in Naked (1993). During the 1990s, he appeared in such films as Black Beauty (1994), Total Eclipse (1995), DragonHeart (1996), Seven Years in Tibet (1997), Divorcing Jack (1998) and The Big Lebowski (1998). Thewlis was cast as Remus Lupin in Harry Potter and the Prisoner of Azkaban (2004) and went on to appear in the next four films in the series. His other credits include Kingdom of Heaven (2005), The Boy in the Striped Pyjamas (2008), The Lady (2011), Macbeth (2015), Wonder Woman (2017) and the TV series Fargo.

Career: After being talent spotted in Saturday morning ITV show Scratchy and Co, Piper signed a record contract at 15, and subsequently became the youngest ever artist to go straight to the top of the UK singles chart with Because We Want To. More hits followed and two successful albums before she quit music in 2003 to become an actress. Her early roles in The Canterbury Tales and one-off drama Bella and the Boys earned rave reviews. Her biggest break came in 2004 when it was announced she would be Doctor Who's companion Rose Tyler in the revived BBC sci-fi series. She's also appeared in The Ruby in the Smoke, Mansfield Park, The Shadow in the North and Secret Diary of a Call Girl.

Career: Wilton worked on the stage until 1972, eventually making her TV debut in An Affair of Honour. Her first film was 1977's Joseph Andrews. BBC sitcom Ever Decreasing Circles made her a household name in 1984; it ran for four series. She's also appeared on TV in The Monocled Mutineer, The Borrowers, Talking Heads 2, The Whistle-Blower, Lucky Jim and Falling. Movie work includes The French Lieutenant's Woman, Cry Freedom, Clockwise, Iris, Shaun of the Dead and Calendar Girls. Sci-fi fans will know her best from her role as British Prime Minister Harriet Jones in Doctor Who; the role was written specifically for her by Russell T Davies, with whom she'd previously worked on Bob and Rose. Her recent work includes The History Boys, Five Days, South Riding and Downton Abbey.