Star Trek fans have made history by breaking the record for the largest gathering of people dressed as characters from the TV series at the Destination Star Trek London convention.
The event at London's ExCel centre on Saturday attracted 1,083 costume-clad "trekkies", narrowly beating the previous record of 1,040, set at the bigger, annual Star Trek convention in Las Vegas in August.
The achievement will be officially verified by Guinness World Records within a few days, but organisers were confident they had topped the Las Vegas record.
Most record-breakers dressed in the colour-blocked uniforms of the Starfleet, with Vulcans, Klingons and Romulans peppering the crowd.
Trekkie Mark Whitfield went to extreme lengths, wearing a full-body suit to emulate a mugato, a beast from Star Trek: the Original Series.
"It looks silly. It's just a gorilla suit painted white with horns on it. It's very, very hot. In fact, I was on the verge of collapse when a very kind person gave me a bottle of water because I dehydrated quite badly," he said.
"Destination Star Trek London" is the first live Star Trek event in Britain for more than a decade. About 17,000 fans came to London to celebrate the 46-year-old TV and film franchise, which has spawned six television series and 11 feature films.
Dawn Harris, 26, who created an Orion slave girl costume and painted herself metallic green, said there was great enthusiasm for the world record attempt.
"There just hasn't been a convention in the UK for so long. So I think everyone wants to be involved in everything as much as they can," she said.
Her fiancé, Ryan Croft, added: "Nerds like achieving missions. We've been set a quest and it must be achieved."
The three-day convention saw Britain's first Klingon wedding on Friday. Swedish couple Jossie Sockertopp and Sonnie Gustavsson tied the knot in full Klingon attire and exchanged vows in the fictional and guttural-sounding language of the Star Trek characters.
It also saw all five captains from the TV series appear on stage together for the first time.
The captains played by actors William Shatner (Captain Kirk), Patrick Stewart (Captain Picard), Avery Brooks (Captain Sisko), Kate Mulgrew (Captain Janeway) and Scott Bakula (Captain Archer) joined forces to open the convention on Friday night.