London Wasps have signed England A lock Tom Palmer on a three-year contract from relegated Leeds.
Palmer was the Tykes' youngest ever captain in 2003
The 27-year-old made his Tykes debut in 1998 and has made over 170 starts for the club.
Palmer made his full England debut on the summer tour to 2001 North America and has been a regular in the A squad.
"Tom is one of England's best young players and we are looking forward to developing his talents further," said Wasps director of rugby Ian McGeechan.
"He will be an important part of Wasps' plans for the future, as we look to maintain a group of quality players and develop our game."
Palmer added: "I'm very pleased to be coming to Wasps.
"I believe this move will be really good for my development, with the opportunity to train and play with top quality coaches and players."