Manager Fabio Capello has cited Wembley as a factor in England's poor display against Wales in their Euro 2012 qualifier on Tuesday night.
England won the game 1-0, edging them closer to next year's tournament, but the team have come in for criticism over their performance.
"I think here we lose the confidence," said the Italian.
"Some players who can usually dribble and can go straight for the goal do not. I want always three players in front of the goal and there was only one.
"But I am happy for the result. It was the most important thing. When you play at Wembley the opponents want to play with more courage and pressure."
England only need a point in their next game against Montenegro to secure a place in the Poland and Ukraine finals.
