Thomas has worked closely with the rock band Queen, of whom he is a major fan, producing seven of their DVDs: "Greatest Video Hits 1" (2002), "Queen Live at Wembley" (2003), "Greatest Video Hits 2" (2003), "Jewels" (2004), "Queen on Fire – Live at the Bowl" (2004), "Queen + Paul Rodgers: Return of the Champions" and "A Night at the Opera - 30th Anniversary", making documentaries and directing new videos, including "I Was Born to Love You". In 2003, he wrote, starred and co-directed (with Simon Lupton) a commercial for "Queen Greatest Video Hits 2" also starring Roger Taylor and Brian May. In July 2010, Thomas was asked by Jim Beach, manager of Queen to write the sleeve notes for all 15 studio albums by the band, due for re-release in 2011 to coincide with the band's 40th. He also produced the critically acclaimed two-part Queen documentary "Days of Our Lives", which was broadcast on BBC2 in May 2011. In 2012, he produced and directed a feature-length documentary about Freddie Mercury, "The Great Pretender", released in September. On 31 December 2010, Thomas appeared on and won "Celebrity Mastermind" with a specialist subject record score of 21 points and a total 36 points. His specialist subject was Queen.