Jonah is an exciting graduate from the London Wasps Academy who will spend the season on loan to Leeds Carnegie.
The young scrum half spent last season on loan to London Welsh and scored a try for Henley Hawks (with whom he had dual registration with) in the match which saw them successfully promoted to National Challenge 1.
Known for his hard-working, strong and combative nature, Jonah also represented London Wasps last season in both the Senior Squad and in the Wasps 'A' squad.
Jonah, who also plays fullback and wing, is another product of St. Benedicts School and continues to follow in the footsteps of fellow ex-pupil Joe Simpson.
Jonah joined the Academy set up in 2009.