Danny Cipriani have not been included in Eddie Jones latest training camp.
Jones have 38 players in his latest camp as they prepare for the World Cup that starts in September.
The players will be in Italy for 12 days to help them acclimatise to conditions which should be similar to what they may find in Japan.
Jones said: “Treviso is a hard yards camp with conditions similar to Tokyo. Team training will be about being adaptable and off the field enjoying each other’s company.”
England will have some warmup games against Wales and Ireland before the World Cup starts.
England will begin their Rugby World Cup campaign in Japan against Tonga before playing USA, Argentina and France.
England’s 38-man squad for Italy training camp
Forwards: Dan Cole (Leicester Tigers, 85 caps), Luke Cowan-Dickie (Exeter Chiefs, 11 caps), Tom Curry (Sale Sharks, 10 caps), Charlie Ewels (Bath Rugby, 10 caps), Ellis Genge (Leicester Tigers, 9 caps), Jamie George (Saracens, 37 caps), Maro Itoje (Saracens, 27 caps), George Kruis (Saracens, 32 caps), Joe Launchbury (Wasps, 58 caps), Courtney Lawes (Northampton Saints, 71 caps), Lewis Ludlam (Northampton Saints, uncapped), Joe Marler (Harlequins, 59 caps), Brad Shields (Wasps, 8 caps), Kyle Sinckler (Harlequins, 22 caps), Jack Singleton (Saracens, uncapped), Sam Underhill (Bath Rugby, 9 caps), Billy Vunipola (Saracens, 41 caps), Mako Vunipola (Saracens, 53 caps), Harry Williams (Exeter Chiefs, 17 caps), Mark Wilson (Newcastle Falcons / Sale Sharks, 13 caps)
Backs: Mike Brown (Harlequins, 72 caps), Joe Cokanasiga (Bath Rugby, 4 caps), Elliot Daly (Saracens, 30 caps), Owen Farrell (Saracens, 70 caps), George Ford (Leicester Tigers, 55 caps), Piers Francis (Northampton Saints, 4 caps), Willi Heinz (Gloucester Rugby, uncapped), Jonathan Joseph (Bath Rugby, 40 caps), Joe Marchant (Harlequins, uncapped), Jonny May (Leicester Tigers, 45 caps), Ruaridh McConnochie (Bath Rugby, uncapped), Jack Nowell (Exeter Chiefs, 33 caps), Henry Slade (Exeter Chiefs, 22 caps), Ben Spencer (Saracens, 3 caps), Ben Te’o (unattached, 18 caps), Manu Tuilagi (Leicester Tigers, 32 caps), Anthony Watson (Bath Rugby, 33 caps), Ben Youngs (Leicester Tigers, 85 caps)