Sam Warburton warned Wales' Six Nations title rivals that there is plenty more to come from Warren Gatland's side after they beat France 19-10 at the Principality Stadium on Friday.
Wales defended valiantly to withstand a France onslaught after George North's second-half try and did enough to maintain their unbeaten record.
A clash with England is Wales' next challenge in a fortnight and captain Warburton said his side have not yet shown what they are capable of.
"You haven't seen the best of us yet and I don't think you have seen the best of any side in the Six Nations this season," said Warburton.
"We're undefeated in three games and it sets it up a massive game for two weeks' time in Twickenham. Everyone knows what is on that match - it's a match the fans want to see.
"The England games are honestly some of the toughest Test matches I've been involved in. Twickenham is one of my favourite places to play rugby - it'll be a fantastic atmosphere and the England players will be highly motivated."
Gatland is confident that Wales can rise to the challenge of facing England at Twickenham.
"It's a great stadium, we love going to play there. They're a quality team and it's going to be a really tough Test match," he said.
"But we've been there on a few occasions and won there, so we've got to have that confidence and belief that you can do it.
"That's why the victory was so important, it keeps us in this Championship.
"If we had lost we would basically have been out of it - but we've got a lot to play for now in two weeks."