Moates, 20, has made 17 appearances this season for London Irish and joins with a growing reputation in the pivotal number nine shirt.
London Wasps Director of Rugby Dai Young said: “I have been impressed with Jack as a young scrum half both for the London Irish A side and their senior side over the past year or so and I know he is a very ambitious player. I believe a squad needs a strong mix of scrum halves over the course of the season and he will add to the mix alongside the likes of Joe Simpson and Charlie Davies.”
Moates said: It’s a really exciting time to be joining London Wasps as they are flying high in the league and pushing for Heineken Cup qualification. There are already some high quality scrum-halves at Wasps but I am looking forward to developing further under the likes of Dai Young and Shane Howarth so that I can challenge for a place in the first team.”