The 34-year-old Cardiff Blues back rower formed part of the Wales side that fell to New Zealand and Australia either side of victories over Samoa and Argentina during the autumn internationals.

Meanwhile England mustered just one try in a limp autumn showing that also saw them defeated by the Wallabies and the All Blacks but triumph over the Pumas.

And despite having three home games to look forward to, Williams admits the opening clash at Twickenham will set the tone for the tournament.

“I think the game against England is the big one, both teams have been inconsistent so a win would be huge for whoever gets it,” said Williams.

“We do have the three home games, but the away games are at Twickenham and Croke Park and there are few tougher places to go than those.

“We need to get started and get off to a flying start because we have the quality to win it if we get on a roll.”