Toby Flood says he's not certain to start the Rugby World Cup as England's first choice Fly-Half.

He's expected to return to the starting line-up for Saturday's match against Wales in Cardiff.

Jonny Wilkinson played Number 10 at Twickenham this weekend kicking 13 points and setting up a try and Flood says the pressure is now on him to match that performance.

"I don't think I've ever been in charge of that 10 shirt. It has always been hugely difficult for me to have it. There will be 58 million people in England who probably think I shouldn't be in charge of it.

"The scenario has always been that Jonny, given his opportunity, will have a standout game and he did that. To me it is nothing new and I have just got to shrug my shoulders and get on with it. The nice things is there is a guy who is driving you hard.

"Whenever you play for England you are always on trial. You have got the responsibility of playing for your country. It is always a high-pressure game so nothing really changes.

"The guys have played well and the team have won a game. There is a massive responsibility on us to make it two from two this weekend."

Flood believes that Wilkinson's legendary status as a hero of the World Cup winning team in 2003 is a big factor.

"It is the history he's had playing for England. He has been a stalwart of the England side for a long time, and someone people respond to really well.

"All I can do is concentrate on playing as well as I can every time I have a chance. I know he's around but it is the same for everyone in the squad, there is competition in all position.

"We are good mates so we can sit and have a chat about the game and scenarios. We are in a situation where Charlie Hodgson, Jonny and I will sit down and discuss things we can improve on. There is a good atmosphere where we can share information."