For the first time in Europe, all five Star Trek captains have gathered for a convention.

William Shatner joined Sir Patrick Stewart, Avery Brooks, Kate Mulgrew and Scott Bakula at Destination Star Trek in London.

Shatner said: "Getting together is a problem because we live in divergent areas of the world."

BBC News asked Shatner and the fans about their favourite Star Trek captain.

Video journalist: Rachel Curtis