London have included union trialist Kai Horstmann in their 20-man squad for the Good Friday game against Hull. The 23-year-old back row forward has played for Harlequins this season and was a member of England's sevens squad.
"He's looked good in training and he'll be given every opportunity to show his wares," said London coach Tony Rea.
"Kai is a powerful player with a good skill level and this is an opportunity for him to break into a team being described as an 'excitement machine'."