Worcester Warriors will tackle Saracens in the first round of the Middlesex 7s at Twickenham on Saturday, August 15.
This year's tournament sees the 12 Guinness Premiership sides joined by four invitational teams - British Army, White Hart Marauders, Samurai 7s and a Help for Heroes team.
The draw for the first round in match order is:
British Army v Bath Rugby
Gloucester Rugby v London Irish
White Hart Marauders v Harlequins Saracens v Worcester Warriors
Samurai 7s v Northampton Saints
London Wasps v Leeds Carnegie
Newcastle Falcons v Leicester Tigers
Sale Sharks v Help for Heroes
For more information about the day visit www.middlesex7s.com