WARREN Gatland says Wales will not get carried away after replacing New Zealand as World Rugby's number one.

Wales' 13-6 World Cup warm-up victory over England in Cardiff saw them end the All Blacks' 10-year unbroken rankings reign.

Their first ever rise to the summit comes just 34 days before the World Cup kicks off in Japan but Gatland is more concerned with who is top in November.

"It's just a number, isn't it?" he said. "It is a nice accolade to have, but it is all about the next few months and backing that up by performing well in the World Cup, and we've a couple of games against Ireland to go as well.

"It's nice for a day, but we won't be shouting from the rooftops about it. We have got to keep things in perspective.

"Lots of journalists will be out there saying 'this is a joke' - probably Kiwi journalists more than anything! It's just a number.

"We are not making a big fuss of it. We will keep it in our pocket and go from week to week."

Fly-half Dan Biggar starred with an accomplished display, converting wing George North's 38th Wales try and kicking a penalty.

The performance answered criticism from former international JJ Williams, who claimed Wales would not win a World Cup with Biggar at 10.

"He (Biggar) was really good today," Gatland added.

"I don't know about that former Welsh player. Was he really old? Played in the 70s probably? Did he play over 50-odd years ago? Probably. That does explain a few things."

England were slicker and more cohesive after the break, but Wales restricted them to a couple of George Ford penalties before a late Leigh Halfpenny penalty sealed victory.

Gatland said: "The players drove a lot this week, and you could tell they were on Test-match edge.

"We showed some fantastic character and big cojones out there. That's what these boys are about, they wear this jersey with pride."

England boss Eddie Jones signed off the double-header against Wales with a light-hearted attempt to pile pressure on.

"They're favourites for the World Cup now. When you go to number one, you're favourites for the World Cup," said the Australian.

Wales head to Turkey for a warm-weather training camp and name their World Cup squad in between games against Ireland.