Question: What host of The Voice UK was in "Doctor Who"?
Context: Tanya Lacey (born 2 March 1986) is a British recording artist, songwriter and composer.  She signed to the record label Sony Music.  She is best known for writing and featuring on Loick Essien's single "How We Roll" which peaked to the No. 2 spot on the UK Singles Chart.  Lacey later co-wrote will.i.am's single "T.H.E. (The Hardest Ever)" featuring Jennifer Lopez and Mick Jagger which charted at No. 3 on the UK Singles Chart.  Later, Tanya supported Bruno Mars as his sole European support for The Doo-Wops & Hooligans Tour.  In 2017 she competed on the Voice UK and made it past the Blind Auditions, joining Team Gavin (Gavin Rossdale).  In the second stage of the competition, she was eliminated from Gavin's team, but was 'stolen' by Will (will.i.am). The Voice UK is the British version of "The Voice of Holland", a television talent show, along the lines of "The X Factor".  This talent show was created by John de Mol and features four coaches looking for a talented new artist, with the intent that a potential auditionee could become a global superstar.  The show's concept is simple; the auditionee walks on to the stage with the judges' backs turned to them, rendering looks, personalities, stage presence or dance routines irrelevant, and starts singing.  If the judges like what they hear, they will turn around, indicating intent to coach them.  If more than one coach turns round, power falls into the hands of the singer.  Once all four teams are complete, the live shows begin and the singers sing songs chosen for them by the coaches. Rebecca Claire "Becky" Hill (born 14 February 1994) is an English singer and songwriter from Bewdley, Worcestershire.  She rose to prominence after appearing on the first series of "The Voice UK", auditioning with John Legend's "Ordinary People".  She joined Jessie J's team and reached the semi-final of the competition.  On 29 June 2014 she became the first The Voice UK contestant to score a UK number 1 when the song, "Gecko (Overdrive)" with Oliver Heldens topped the UK Singles Chart. Reggie Yates (born 31 May 1983) is a British actor, television presenter and radio DJ, best known from his roles as Rastamouse, Leo Jones in "Doctor Who", and for his work at the BBC in radio and television - presenting various shows for BBC Radio 1 with Fearne Cotton – as well as hosting the ITV2 reality show "Release the Hounds" from 2013 until 2017. Sir Thomas John Woodward OBE (born 7 June 1940), also known by his stage name Tom Jones, is a Welsh singer.  His career has spanned six decades, from his emergence as a vocalist in the mid-1960s with a string of top hits, regular touring, appearances in Las Vegas (1967–2011), and career comebacks—to coaching on "The Voice UK" from 2012 (with the exception of 2016).  Jones's powerful voice has been described as a "full-throated, robust baritone". Stevie McCrorie (born 23 March 1985) is a Scottish singer-songwriter.  He is best known as a firefighter who won the fourth series of the BBC television singing competition "The Voice UK" in 2015.  He auditioned with Kodaline's "All I Want", with all four coaches turning their chairs for him.  His debut single, "Lost Stars", was released the day following his win and reached number six on the UK Singles Charts, number one in Scotland and eighty-seven in Ireland.  Since winning 'The Voice', he has performed at T in The Park. The Voice Kids is a British television talent show created by John de Mol and its first premiere was on 10 June 2017 on ITV.  Presented by Emma Willis, the programme is a junior version of "The Voice UK" and is part of "The Voice Kids"' worldwide franchise.  The coaches are will.i.am, Danny Jones and Pixie Lott .  Repeats also air on CITV and ITV2. Storm Keating (born 27 October 1981) is an Australian-born fashion designer, brand ambassador, producer-director and blogger, now based in London.  Keating has worked on a number of Australian and British television programmes such as "The Apprentice Australia", "Masterchef Australia", "The X Factor", "The Voice Australia", and "The Voice UK".  She is the wife of Ronan Keating. The Voice UK is a British television music competition to find new singing talent.  The second series was hosted by Holly Willoughby and Reggie Yates on BBC One and started on 30 March 2013.  On 13 November 2012, it was confirmed that all four coaches from last year would return.  The show's Blind Auditions moved to MediaCityUK in Salford, Greater Manchester.  It was also confirmed that the live show format would be tweaked for this series, which included the cutback from six live shows in the first series to only three live shows, and the pre-recorded results show had also been dropped, with the results given on the same night as the performances.  On 28 February 2013, four ten-second teaser trailers were posted to the show's official website and YouTube page. Kevin Ian Simm (born 5 September 1980, Chorley, Lancashire, England) is an English pop singer.  He won "The Voice UK" on 9 April 2016.  Before appearing on "The Voice", Simm was a member of pop group Liberty X.
Answer: Reggie Yates