Where did you get this? The squad on england rugby website is:
Forwards
Dan Cole (Leicester Tigers), Tom Curry (Sale Sharks), Tom Dunn (Bath Rugby), Charlie Ewels (Bath Rugby), Ellis Genge (Leicester Tigers), Jamie George (Saracens), Dylan Hartley (Northampton Saints), Nathan Hughes (Wasps), Nick Isiekwe (Saracens), Maro Itoje (Saracens), Joe Launchbury (Wasps), Courtney Lawes (Northampton Saints), Joe Marler (Harlequins), Chris Robshaw (Harlequins), Sam Underhill (Bath Rugby), Harry Williams (Exeter Chiefs), Billy Vunipola (Saracens), Mako Vunipola (Saracens).
Backs
Mike Brown (Harlequins), Danny Care (Harlequins), Elliot Daly (Wasps), Owen Farrell (Saracens), George Ford (Leicester Tigers), Piers Francis (Northampton Saints), Alex Lozowski (Saracens), Jonny May (Leicester Tigers), Jack Nowell (Exeter Chiefs), Henry Slade (Exeter Chiefs), Marcus Smith (Harlequins), Ben Te’o (Worcester Warriors), Anthony Watson (Bath Rugby), Marland Yarde (Harlequins), Ben Youngs (Leicester Tigers).
Some differences there. And yours includes Manu Tuilagi...