Peter Dougan Capaldi is a Scottish actor, director, singer and guitarist. He portrayed the twelfth incarnation of the Doctor in the science fiction series Doctor Who (2013–2017) and Malcolm Tucker in The Thick of It (2005–2012), for which he received four British Academy Television Award nominations, winning Best Male Comedy Performance in 2010. Twelfth Doctor: 23 August 2014 – 25 December 2017. First regular appearance: "Deep Breath". Last: "Twice Upon a Time". Wiki link