Stacey Jones tries to breach the Great Britain defence

"They will be a lot better after the run-out," said the scrum-half. "No-one must underestimate Britain. There will be a big improvement from them."

But full-back Brent Webb says the Kiwis should also improve next time out.

"I don't think we played very well. Our rucking was pretty loose at times," he said. "We must freshen it up and come back ready for next week."

Interview: New Zealand coach Brian McClennan

Saturday's 18-14 win at Jade Stadium was New Zealand's first in this year's competition after losing their opening two games to Australia.

"We worked really hard in the last couple of weeks and to come away with a win was good," added Jones. "This relieves the pressure a little bit."