A WHITE number 9 jersey hanging on Gareth Davies' wall serves as a reminder that Wales should have no fears about going to Twickenham.

Warren Gatland's side are underdogs for Saturday's Six Nations clash in England, but the same was the case two and a half years ago.

A home win would have been a telling blow in the tussle with Australia for qualification from a World Cup group of death.

Instead there was an away triumph and the Wallabies would go on to knock the hosts out of their own tournament.

Wales had looked doomed when England led 22-12 with half an hour left but they fought back and closed in when Davies pounced on a kick through by Lloyd Williams, a fellow scrum-half playing on the wing because of a glut of injuries.

Dan Biggar converted then kicked a penalty for a miraculous success, another one in London under Gatland that means they don't have any demons for Saturday.

"We've had a few famous wins there, especially the one in the World Cup. That's what springs to my mind when someone mentions Twickenham," said the Scarlets scrum-half.

"I swapped shirts with Ben Youngs that day so I've got his shirt hanging up in my house. There are a couple of photos floating about, too.

"The atmosphere was amazing, full house, 80,000 odd, a packed stadium with a lot of Welsh there. That helped us a lot towards the end as we had to grind out the win.

"It's one of the favourite moments in my career so far. There are others up there – winning the league with the Scarlets last year, that famous win against Bath a few weeks ago. But that try in the World Cup is up there."

That was Stuart Lancaster's England and this weekend they face a team rejuvenated by Eddie Jones with 23 wins from 24 Tests.

"We're expecting a totally different game this week. England are one of the form teams in the world and we're expecting a massive challenge," said Davies.

"Eddie Jones has taken over and he's doing a fantastic job with them isn't he? I don't think they've lost at Twickenham in a couple of years (their last Six Nations loss was versus Wales in 2012)."

After starting the tournament with no expectations from the public, Wales head over the Severn Bridge with hopes suddenly high because of the manner of their victory against Scotland.

Davies got the ball rolling with the opening try – his 10th in 28 internationals – and further scores followed from Leigh Halfpenny (2) and Steff Evans for a first Welsh four-try bonus in the championship.

"From day one in camp we've trained well and been really sharp. We've been on the same page and we were quietly confident going into the Scotland game, then we produced the goods," said Davies, who is starting in the absence of the injured Rhys Webb.

"We will keep going on like that. We started off the week well and hopefully we can continue like that, then put in a similar performance up at Twickenham this weekend."

Davies' 9-10-12-13 combination with Scarlets teammates Rhys Patchell, Hadleigh Parkes and Scott Williams was as devastating on the Test scene against the Scots as it has been in club rugby and the scrum-half hopes that familiarity helps them on English soil.

"It was quite funny, we had a couple of Scarlets calls off the top of our heads at the weekend just by accident but we all reacted to them and got through it," he said.

"We didn't even flinch. We were on the same page and we just got on with it."

Davies will hope to write another Twickenham chapter to that book on Saturday.