Finishing their day with a comfortable 19-12 win over a Britain side who went winless after a shock 21-26 loss to Tonga, New Zealand struck early when Roderick Solo scored in the first and sixth minutes, the second resulting from a super inside sidestep.
Britain scored first after the half when Ross McCann got across. But the New Zealanders brought some older hands into play, with Joe Webber benefiting from Regan Ware drawing the defence inside him before passing on to Webber to score in his 50th tournament.
That put the New Zealanders out to a 19-5 lead before Britain scored a consolation try on fulltime to Will Homer.
Captain Sam Dickson said he was delighted with the day's performances, they had been positive in their approach, and players had stepped up while their new players also performed well.
The All Blacks Sevens eased their way into the first day with a 45-0 over the invited Tonga team. Moses Leo opened the scoring after a minute, followed by Ware, Webber, Solo, Ngarohi McGarvey-Black (2) and Brady Rush. Akuila Rokolisoa landed two conversions and McGarvey-Black three.
Next, they played the Australians, who had beaten Britain 28-14 in their first game. Webber scored first, but Australia struck back and claimed the lead through a James Turner try. However, Rokolisoa scored and converted to lead 14-12. Henry Paterson nudged Australia ahead with a converted try in the 11th minute.
New Zealand struck back straight away, with Solo scoring and Rokolisoa making it 100 per cent for the game with his conversions to claim the 21-19 win.
Cape Town tournament winners Samoa could not repeat that effort, losing 10-21 to France in their first game and 12-22 to Fiji in their second.
Britain made a poor start to the tournament, going down 14-19 to Fiji before picking up to beat Papua New Guinea 36-0.
Other quarterfinal action will see South Africa against France at 10.58 am, Fiji against Argentina and the USA against Australia.
Catch up on all the action, results and draw HERE.