[2] His career in television began in 2006 when he appeared as the vicar, St. John Rivers, in the 2006 Jane Eyre and then as the regular character Scott Foster alongside Matt Smith in the political drama Party Animals.
[citation needed] In 2007, he appeared as Jem Hearne in the award-winning Cranford, in a cast that included Judi Dench, Imelda Staunton and Eileen Atkins.
[citation needed] In 2008 and 2009, he starred in the ITV1 drama The Fixer as the lead role, John Mercer, a paid assassin targeting people who have escaped the law.
[citation needed] In 2009, he appeared as Fishwick in the John Lennon biopic Nowhere Boy acting opposite Kristin Scott Thomas, and directed by Sam Taylor-Wood.
[citation needed] In 2010, Buchan appeared as journalist and love interest Billy Marshall in the made-for-TV movie Abroad, based in part on the true-life experiences of Toronto's Globe and Mail columnist and author, Leah McLaren.
[5] The immediate ratings success of Broadchurch led to Andrew, with co-star Jodie Whittaker, being invited to present a TV BAFTA at the awards ceremony in May 2013.
[8] In July 2014, Buchan starred alongside Academy Award nominee Maggie Gyllenhaal in Hugo Blick's political thriller The Honourable Woman.
[citation needed] In 2015, it was announced that Buchan was cast as the lead role in TNT drama pilot Home alongside Bethany Joy Lenz.
[citation needed] Buchan played the wizard, The Great Zambini, the dramatisation of Jasper Fforde's fantasy novel The Last Dragonslayer, which premiered on Sky One on Christmas Day 2016,.
[12] He has read prose and poetry on BBC Radio for Words and Music: Law and Order[13] and Ave Maria,[14] as well as featuring in online role-playing games, audio books,[15] advert voice-overs, and narrating TV documentaries and reality-competition shows, such as Britain's Best Home Cook.
[citation needed] Buchan married his long-term girlfriend, actress Amy Nuttall, on 8 September 2012, not far from their respective childhood homes in Lancashire, England.