The number eight takes over at the Twickenham club from Stephan Lewies who’s decided to step down after four years in the role.
Arriving at Quins in 2018, he has scored 70 tries in his 139 appearances and capped 17 times for England.
Lewies says, “I can’t think of a better leader, teammate or person for this role, and I have no doubt he’ll succeed quickly”.