Crusaders fly-half Tom Taylor and Chiefs hooker Hika Elliot have both been summoned by All Blacks coach Steve Hansen following Saturday's 33-10 victory over Wales in Cardiff.
Taylor, son of 1987 World Cup winner Warwick Taylor, will provide cover for Dan Carter, who missed the Wales encounter because of an Achilles injury.
Elliot, meanwhile, will link up with the squad as Keven Mealamu has a calf muscle problem and Andrew Hore is likely to find himself in disciplinary hot water.
Hore escaped any on-pitch sanction after he punched Wales lock Bradley Davies from behind in the first minute of Saturday's game.
But match citing commissioner, former England flanker Mike Rafter, is likely to report the 34-year-old for foul play. Rafter has until early Sunday evening to make his decision.
If Hore is cited, then he can expect to face a disciplinary hearing on Tuesday or Wednesday.
Davies was unable to play any further part in the contest and went to hospital, where he was checked over. Neither referee Craig Joubert nor his assistants spotted Hore's punch.
"It does not look the best in the world. It looks like he (Davies) has been caught from behind," Wales head coach Warren Gatland said.
"You do not associate the All Blacks as being a side that resort to cheap shots, and I hope that is not the case and that maybe it was an accident.
"Bradley was a big loss to us and it took us a bit of time to cope."
Hansen accepted after the game that Hore would "probably be cited", and the All Blacks squad headed to London Sunday with that cloud hanging over them.
Carter, meanwhile, was injured during training last Thursday, and the fact that Taylor has been called up as cover suggests he could be struggling to make the England game.
Aaron Cruden, who took over from Carter during the World Cup last year when he suffered an injury during the competition's pool phase, delivered another assured display in his absence against Wales, kicking 18 points.
"Aaron was outstanding," Hansen said. "He drove us around the park for the first 50 minutes really well.
"His kicking game was exceptional, when a couple of years ago he didn't have a kicking game. He didn't miss one shot at goal, and you can't ask for much more than that."
New Zealand's latest victory extended their unbeaten record to 20 Tests, with Hansen yet to oversee a defeat since he succeeded Graham Henry in the coaching hot-seat last December.
And the current team continues to be described in many quarters as the greatest in New Zealand's rich rugby history.
"What I like about this team is that they want to play rugby, and they are very humble guys in terms of how they give their time," Hansen added.
"The best (New Zealand) side I ever saw was the 1967 side. If people think we are, then that is something I will leave up to them.
"We can get better, and we have to - otherwise we will get passed.
"We were pretty clinical for the first 60-65 minutes (against Wales). We did things pretty well and took our opportunities.
"In the last 20 minutes, we lost our way a bit and kicked away a bit too much ball. But overall, for our second-last game of the season I thought it was 10 out of 10."