Billy Vunipola has returned from injury to re-join the England squad.
The No.8, who played 70 minutes for his club side Saracens on Sunday, has missed the opening three matches of the RBS 6 Nations through injury.
He was one of 30 players that assembled at Pennyhill Park on Sunday to prepare for Saturday’s Six Nations game against Scotland at Twickenham Stadium.
Vunipola is joined by brother Mako while fellow Saracen Alex Lozowski is also included. Bath wing Anthony Watson is also fit following a recent hamstring strain.
England head coach Eddie Jones will name his 23-man squad to face Scotland on Thursday.
Forwards: Jack Clifford (Harlequins), Dan Cole (Leicester Tigers), Jamie George (Saracens), Teimana Harrison (Northampton Saints), Dylan Hartley (Northampton Saints), James Haskell (Wasps), Nathan Hughes (Wasps), Maro Itoje (Saracens), Joe Launchbury (Wasps), Courtney Lawes (Northampton Saints), Joe Marler (Harlequins), Kyle Sinckler (Harlequins), Billy Vunipola (Saracens), Mako Vunipola (Saracens), Mike Williams (Leicester Tigers), Tom Wood (Northampton Saints)
Backs: Mike Brown (Harlequins), Danny Care (Harlequins), Elliot Daly (Wasps), Owen Farrell (Saracens), George Ford (Bath Rugby), Jonathan Joseph (Bath Rugby), Alex Lozowski (Saracens), Jonny May (Gloucester Rugby), Jack Nowell (Exeter Chiefs), Henry Slade (Exeter Chiefs), Ben Te’o (Worcester Warriors), Anthony Watson (Bath Rugby), Marland Yarde (Harlequins), Ben Youngs (Leicester Tigers)