Although Williams has promised to treat the game just like any other, he admits that the clash with the world champions is one of the biggest in the rugby calendar.

And Williams is adamant that the Wales players are confident of beating England in Cardiff for the first time in 12 years.

Maybe we need to go out on the field and let our excitement go, not keep it in check,'' Williams told BBC Sport Wales.

''What a game to start the competition, it's about the biggest tie to play in.

''We can't look at it as a do-or-die game for the season but must treat it like any other. There's a great belief in the camp we're good enough to win.''

The 27-year-old Ospreys winger believes that despite the inevitable tension, the game will be free flowing and full of running rugby.

''We enjoy the running game, and with talent like Josh Lewsey, Jason Robinson and their two young centres hopefully England will look to that as well,'' said Williams.