England Under-21s handed their young Welsh counterparts a finishing lesson at Wrexham's Racecourse Ground. Carlton Cole set up Jonathan Stead for the first early on then crossed for Peter Whittingham to blast a second.
Wales were denied when the officials failed to see that Owain Tudur-Jones' long-range effort had crossed the line.
Michael Dawson's header and another from Whittingham late on earned them a win that secures a Uefa Under-21 Championship play-off spot.
Wales U21: Hennessey, Beevers, Gilbert, Tudur-Jones, Anthony, Nyatanga, Birchall, Crofts, Craig Davies, Cotterill, Arron Davies.
Subs: Adam Davies, Pulis, Mackin, Fleetwood, Pritchard, McDonald, Worgan.
England U21: Carson, Johnson, Ridgewell, Ferdinand, Dawson, Reo-Coker, Milner, Ambrose, Cole, Stead, Whittingham.
Subs: Hunt, Camp, Davenport, O'Neil, Soares, Welsh, Nugent.
Referee: Janos Megyebiro (Hungary).