Dan Cole, Joe Heyes, George Martin, Guy Porter, Jack van Poortvliet, Freddie Steward, Anthony Watson and Ben Youngs have been included in the England Rugby training squad.
The eight Leicester Tigers will link up with international team-mates in Brighton for England’s second Rugby World Cup preparation camp.
The squad does not include players from Premiership finalists Sale Sharks and Saracens.
“After an excellent first week’s training, we are very much looking forward to being in Brighton,” said Borthwick. “We’re pleased to welcome players from Northampton Saints and Leicester Tigers who can now start to integrate themselves into the group, and we look forward to players from Sale Sharks and Saracens joining us in a fortnight.
TRAINING SQUAD
Forwards
Jamie Blamire (Newcastle Falcons)
Dan Cole (Leicester Tigers)
Alex Dombrandt (Harlequins)
Tom Dunn (Bath Rugby)
Charlie Ewels (Bath Rugby)
Ellis Genge (Bristol Bears)
Joe Heyes (Leicester Tigers)
Ted Hill (Bath Rugby)
Courtney Lawes (Northampton Saints)
Lewis Ludlam (Northampton Saints)
Joe Marler (Harlequins)
George Martin (Leicester Tigers)
Zach Mercer (Montpellier Hérault Rugby)
Beno Obano (Bath Rugby)
Tom Pearson (London Irish)
Val Rapava-Ruskin (Gloucester Rugby)
David Ribbans (Northampton Saints)
Kyle Sinckler (Bristol Bears)
Will Stuart (Bath Rugby)
Sam Underhill (Bath Rugby)
Backs
Henry Arundell (London Irish)
Danny Care (Harlequins)
Joe Cokanasiga (Bath Rugby)
Fraser Dingwall (Northampton Saints)
Tommy Freeman (Northampton Saints)
Will Joseph (London Irish)
Joe Marchant (Harlequins)
Jonny May (Gloucester Rugby)
Alex Mitchell (Northampton Saints)
Cadan Murley (Harlequins)
Guy Porter (Leicester Tigers)
Henry Slade (Exeter Chiefs)
Fin Smith (Northampton Saints)
Marcus Smith (Harlequins)
Freddie Steward (Leicester Tigers)
Jack van Poortvliet (Leicester Tigers)
Anthony Watson (Leicester Tigers)
Ben Youngs (Leicester Tigers)
Billy Vunipola (Saracens), Ollie Chessum (Leicester Tigers) and Luke Cowan-Dickie (Exeter Chiefs) remain in camp to continue their rehabilitation from injury.