Former England coach Sir Clive Woodward says based on Sunday's victory over Australia, England are not yet ready to challenge the All Blacks at the 2019 Rugby World Cup.
England went through 2016 unbeaten, winning 13 from 13 clashes including a four test sweep of Australia. They now have their sights set on the All Blacks' 19-test winning streak which they can match if they go through the Six Nations unbeaten for the second straight year.
It's been a huge turnaround under Australian coach Eddie Jones after England failed to advance out of the group stage at their own World Cup last season.
Now ranked number two in the world they look a real threat to match the All Blacks, unfortunately they don't face the World Champions until at least 2018.
In a column for the Daily Mail, Woodward, who coached England to the 2003 Rugby World Cup title, says England are not world-beaters yet but are on the right track after ending beating the Wallabies on Sunday. However he said based on the start to Sunday's test, if they were playing the All Blacks they would have lost.
"Smiling supporters were cracking open the champagne on Saturday night but if England are to win the World Cup again, now - this week - is the time to be hyper-critical on and off the field, because they are not world-beaters yet.
"The World Cup is three years away and all the teams arrive fully loaded and prepared, which we just haven't seen from the Southern Hemisphere teams this autumn.
"Winning teams crack the whip in victory even more than in defeat and analyse why they are winning, always trying to raise the bar inch by inch in every part of their game.
"Everybody in the England camp will know that if that had been New Zealand on Saturday the game would have been lost after 20 minutes," Woodward wrote for the Daily Mail.
The last time the two nations clashed was two years ago when the All Blacks defeat England 24-12 at Twickenham.
Woodward also said he believes the All Blacks are a fitter side than the English who he said are on the verge of a 'golden era'.
"There are options and exciting possibilities everywhere and I genuinely believe that this, finally, is going to be the start of a new golden era for England.
"World rugby needs a strong England team, and at last we can say it has one."