Sir Clive Woodward has made two additions to his squad for their RBS 6 Nations Championship game against Wales at Twickenham on March 20.
Leicester prop Julian White and Sale hooker Andy Titterrell are both included in a 28-man party to prepare for the match.
England were beaten on their last outing against Ireland last week and need to win to maintain hopes of retaining the championship.
Englands 28-man training squad to prepare for RBS 6 Nations Championship game against Wales at Twickenham on March 20:
Backs: I Balshaw (Bath), J Lewsey (Wasps), B Cohen (Northampton), J Robinson (Sale), J Simpson-Daniel (Gloucester), W Greenwood (Harlequins), M Tindall (Bath), P Grayson (Northampton), O Barkley (Bath), A Gomarsall (Gloucester), M Dawson (Northampton), M Catt (Bath).
Forwards: T Woodman (Gloucester), J Leonard (Harlequins), P Vickery (Gloucester), M Stevens (Bath), S Thompson (Northampton), M Regan (Leeds), D Grewcock (Bath), B Kay (Leicester), C Jones (Sale), R Hill (Saracens), J Worsley (Wasps), A Titterrell (Sale), J White (Leicester), L Dallaglio (Wasps, capt), S Borthwick (Bath), N Back (Leicester).