article_snippet: David Tennant provided the voiceover for one of Labour's election broadcasts in 2010 and was pictured with Sarah Brown, wife of then prime minister Gordon Brown.
article_snippet: Who David Tennant has provided the voiceover for several Labour election broadcasts .
article_snippet: Take That singer and former X-Factor judge Gary Barlow appeared with David Cameron at the last election to back the idea of a UK-wide school talent contest .
article_snippet: Take That singer and former X-Factor judge
article_snippet: Gary Barlow Gary Barlow appeared with David Cameron at the last election to back the idea of a UK-wide school talent contest.