The All Blacks have posted a 58-14 win over Namibia in their second Rugby World Cup pool match at London's Olympic Stadium.

Five first half tries gave New Zealand a 34-6 halftime lead, with winger Nehe Milner-Skudder grabbing a double.

The All Blacks added another four tries in the second half, with Julian Savea scoring two.

All Blacks captain Sam Cane says Namibia were strong opponents.

"Namibia put us under a lot of pressure, and I think it probably was a good spectacle for the crowd to watch. But credit to them, they put a lot of pressure on at the breakdown."

Namibia captain Jacques Burger says he's extremely proud of how his side fought.

"I'm very encouraged by the boys fighting to the end, I said in the beginning it's all about small victories. Keeping them out at the right time and putting phases together."

The All Blacks try scorers were Victor Vito, Malakai Fekitoa, Beauden Barrett, Ben Smith, Codie Taylor and a double to Julian Savea and Nehe Milner Skudder.

Namibia's Johan Deysal earned the biggest cheer of the night when he crossed for his team's sole try.