Back row forward Sam Jones has become the latest young English player to commit his future to London Wasps.
Jones, 21, has already made over 50 appearances for Wasps, including 24 this season.
Locally-born, Jones has come through the Wasps academy and youth system.
He said: "I am excited about what the future holds for this squad and with lots of young talent staying here, we are heading in a very positive direction."
Jones, who has also played for England U20's, joins an impressive group of young players signed up for the long-term at Wasps, including Elliot Daly, Joe Launchbury and Christian Wade.
Director of Rugby Dai Young said: "I am a big fan of Sam's and his work rate and professionalism is excellent on and off the field.
"I am convinced he will be a long-term regular first-team player for this club with huge potential to develop further at international level if he continues to progress as well as he has."