Career: Early projects included A Relative Stranger, Poldark and Wilde, but it was his small part as Fifth Officer Lowe in James Cameron's blockbuster Titanic that got him noticed. The title role in miniseries Hornblower followed, making Gruffudd a star on both sides of the Atlantic. He impressed in the BBC's adaptation of Great Expectations, drama Solomon and Gaenor (for which he learned Yiddish) and children's hit 102 Dalmatians, before reprising Hornblower. He's also appeared in The Forsyte Saga, Man and Boy, Warriors and Ringer, and his healthy film career has included the movies Fantastic Four (and its sequel), Black Hawk Down, and historical drama Amazing Grace. In 2014, he began playing Dr Henry Morgan in American crime drama Forever.

Career: Lindsay's movie debut came in 1973's That'll Be the Day. His big break came in 1977 when he played would-be revolutionary Wolfie in John Sullivan's BBC sitcom Citizen Smith. After that he concentrated on serious roles. Theatre parts include Hamlet and Cyrano De Bergerac, but his biggest stage hit to date is musical Me and My Girl, for which he won numerous awards on both sides of the Atlantic. He made his Hollywood debut in the ill-received Bert Rigby You're a Fool in 1989, but Alan Bleasdale's TV series GBH put his career back on track. Since then, successes include Jake's Progress, The Wimbledon Poisoner, Brazen Hussies, Hornblower and My Family. More recently, he's starred in detective drama Jericho, played Tony Blair in A Very Social Secretary and The Trial of Tony Blair, traced his family on Who Do You Think You Are? and starred in Sky1 sitcom Spy.

Career: Warner gained acclaim with the Royal Shakespeare Company and The Wars of the Roses TV show before landing a major role in the movie Tom Jones in 1963. It paved the way for his first leading part, Morgan: A Suitable Case for Treatment, in 1965, the same year he won plaudits for his West End performance as Hamlet. Since then, he's made more than 150 TV and film appearances, most notably in Straw Dogs, The Omen, Time Bandits, The French Lieutenant's Woman, The Man with Two Brains, Tron, two Star Trek movies and The League of Gentlemen's Apocalypse. He returned to Shakespeare in 2005, playing the title role in King Lear at the Chichester Festival Theatre. His later work includes roles in TV film In Love with Barbara, and the dramas Wallander and Mad Dogs.

Career: McGann started out on stage, eventually making his TV debut in the 1983 series Give Us a Break, but it only lasted for one series. He became a household name in 1987, thanks to acclaimed TV drama The Monocled Mutineer and has achieved long-lasting fame thanks to a starring role in cult 1986 film Withnail and I. He went on to appear in Alien 3, Our Mutual Friend, Nature Boy and Queen of the Damned. McGann also became the eighth Time Lord when he appeared in the 1996 Doctor Who film. Another notable appearance came in The Hanging Gale, a drama about the Irish potato famine which co-starred his three brothers. He's cropped up in several Hornblower dramas, plus Poirot, Marple, acclaimed drama True Dare Kiss and the last-ever episode of Waking the Dead.

Career: Glenister's first professional role was as Mercutio in Romeo and Juliet at the Lyceum, Edinburgh. He went on to star in Jonathan Harvey's acclaimed play Beautiful Thing at the Bush Theatre in London. On TV, Glenister honed his craft in Minder, Love Hurts, True Love, The Perfect Blue and Sharpe. However, it was roles in Clocking Off, The Hunt, State of Play and Island at War that boosted his profile. On the big screen he has appeared in ID, Calendar Girls, Kingdom of Heaven and Bel Ami. Award-winning BBC drama Life on Mars and its follow-up Ashes to Ashes turned him into a cult hero. He has also starred in the film Tuesday, and on TV in Cranford, Demons, Big School and Mad Dogs. He hosts the series For the Love of Cars.