A desperate appeal to find a British tourist has been launched after he vanished after jumping from a party boat in Prague. The 29-year-old man was last seen reportedly jumping off a boat party in the early hours of Sunday, April 27, in Prague, Czech Republic. 

The man, who has been identified as Joop Sparkes, reportedly jumped off the boat at roughly 1am "to go for a swim" and has not been seen since.