Runaway Bride spotted on YouTube

A clip of the The Runaway Bride, this year's Christmas special, has been leaked onto the internet. Four minutes of the show have appeared on the video sharing site YouTube, which lets people put video online for others to watch. BBC Newsround suggests that the clip might come from "a special concert for Children in Need in Cardiff, where parts of the show were screened." Be aware that the Newsround link provided here also reveals spoilers about what the clip contains.