Former World Cup-winning England coach Sir Clive Woodward has admitted that he is concerned for England ahead of their Six Nations clash with Wales.

Both teams go into the match having won their previous two matches, but Wales will be chasing the Triple Crown after defeating Ireland and Scotland.

"I am concerned for England against Wales on Saturday because speed of ball from contact is currently the biggest difference between the two teams," Woodward said.

"If England want to surprise the Welsh team by exerting maximum pressure on them with a fast game, they have to select and coach players with the skills to deliver this under the stress of Test-match rugby.

"Can England beat Wales? Yes. But only if their speed of ball from all phases is much faster than we have seen in their first two games of this season's Six Nations."

England host Wales at Twickenham on Saturday, February 25.