NZ close day three on 394-6, leading by 41 runs
Watling hits superb unbeaten 119, Santner 31 not out
England only take two wickets all day
Nicholls falls lbw to Root for 41 and Sibley takes stunning catch to remove De Grandhomme for 65
Watling & De Grandhomme put on 119 for sixth wicket
Watling dropped on 31 by Stokes
Lead by 17
Jofra Archer has been well short of his best today. He's struggled to bowl a consistent and threatening line.
Twice he throws deliveries down the leg side from around the wicket, prompting him to go over the wicket.
But again it's down the leg side...
And again...
Deary me.
Jonathan Agnew
BBC cricket correspondent
BJ Watling has not changed gear at all. It's exactly the right innings for this situation and on this pitch.
Shot! BJ Watling just keeps on going, he wants to grind England down.
He just stands deep in the crease, waits for the ball to come to him and drives off the back foot through the covers for four more.
Lead by 13
A maiden first up from Jofra Archer.
Mitchell Santner doesn't particularly like short-pitched bowling but he handled that over pretty well.
Jofra Archer is coming on.
Time to mop up the tail, Joff...
Mitchell Santner pulls a short one from Leach down to long-on. That takes the partnership to 50 - the ninth of the game.
Jack Leach will continue after the drinks break.
Andrew Samson
BBC Test Match Special statistician
This is BJ Watling's seventh Test hundred as a wicketkeeper. He is now joint fifth on the list of most hundreds as a wicketkeeper. Adam Gilchrist is top with 17. Andy Flower second on 12. Les Ames third on eight and Watling has joined Matt Prior, AB de Villiers and Kumar Sangakarra on seven.
England have got some thinking to do.
New Zealand's lead is now 11.
Mark Ramprakash
Ex-England batsman on BBC Test Match Special
That is a fantastic knock. Watling's team will be so thrilled. He has dragged New Zealand into the game and the fact they have lead is largely down to his performance.
Bryan Waddle
BBC Test Match Special
The first man to score a Test hundred on this ground!
An eighth Test century for the wicketkeeper-batsman!
It's been a terrific knock and he's pulled New Zealand right back into the game.
If he can keep building this lead, he is putting his side on top here.
Mitchell Santner miscues one slightly towards cow corner but he's hit it well enough to pick up three runs.
The partnership is 47 now.
BJ Watling tucks one off his hips to move to 99.
Mark Ramprakash
Ex-England batsman on BBC Test Match Special
That is a shot we have seen a lot from Watling. It is not particularly memorable but a very good shot.
Gorgeous shot by BJ Watling!
He pierces the field between mid-off and cover with a lovely drive and he moves to 98.
A single through mid-wicket takes Watling to 94.
This partnership is worth a frustrating 39 now.
There are 15 overs left in the day, so we should actually finish pretty close to the scheduled end time of 5am today, which is nice. What will New Zealand's lead be at the end of the day?
Joe Root has given up with the experiment of bowling himself and Jack Leach comes back on.
Lead by one
New Zealand move into the lead as BJ Watling works a single. He's in the 90's and edging closer to his eighth Test century.
England wouldn't have expected this when they turned up at the ground this morning...
Mark Ramprakash
Ex-England batsman on BBC Test Match Special
Ben Stokes feels he might have been in the game there at leg slip. It looked in control. I think England are clutching at straws.