NZ 546-6published at 188.3 overs
What a shot! BJ Watling brings out the reverse paddle sweep to the returning Joe Root and it zips away for four.
Absolutely toying with England here.
England end day four 207 runs behind NZ with just seven wickets in hand
Santner stars for NZ with maiden Test century and three late wickets
Watling hits 205; sharing in 261-run seventh-wicket stand with Santner
First Test in two-match series
Callum Matthews
What a shot! BJ Watling brings out the reverse paddle sweep to the returning Joe Root and it zips away for four.
Absolutely toying with England here.
Simon Mann
BBC Test Match Special
It goes without saying, but this is extremely dispiriting for England. The one thing they'll clutch onto, is this pitch is still good and slow.
Mark Ramprakash
Ex-England batsman on BBC Test Match Special
This is a test for the whole England team, but Sam Curran is a very young man, who hasn't played much international cricket, especially overseas in these sorts of conditions. Jofra Archer too. It's a huge learning curve for the England attack.
Lead by 189
In a strong field of contenders, Sam Curran has just bowled the worst over by an England player in this innings.
Capped off with a nothing short ball that a set Mitchell Santner can lean back and whack into the grass banks over deep mid-wicket for six.
Simon Mann
BBC Test Match Special
He's powered that back past Sam Curran.
Mitchell Santner is unfurling his levers with aplomb now - a pull shot rockets out towards the fence but Ollie Pope puts in a superb dive to keep it to two.
No stopping that though - Sam Curran sends down a low full toss and Santner dimissively punches it back down the ground for four.
Buffet bowling.
Give that selection panel a raise.
Simon Mann
BBC Test Match Special
Reading the New Zealand press release when the squad was announced, they wanted to bolster their lower-order batting which is why Mitchell Santner was selected.
Lead by 176
Mitchell Santner swivels fine for four more, this time beating Zak Crawley's dive.
Simon Mann
BBC Test Match Special
It's been a courageous innings. He's looked all at sea against the short ball at times but he's toughed it out. One of the most memorable days in his career. He's helped lead New Zealand into an extremely strong position.
The biggest cheer of the day at the Bay Oval and for good reason.
Mitchell Santner has his maiden Test century.
A short ball from Ben Stokes and Santner swivels it round the corner. Zak Crawley puts in a fine diving stop to prevent the boundary but it gives Santner enough time to scamper back for the second.
Off comes the helmet but it's a restrained celebration overall, perfeclty reflecting this superb knock.
Steven Finn
England bowler on BBC Test Match Special
You can't fault England today, at all. They've stuck at it, their fielding and bowling efforts have been good. Their plans early on were conventional and they've moved through different plans. There's just been very little from the New Zealand batsman.
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What irritates me is that NZ have made the pitch look an absolute road and yet I have this nagging feeling England will make it look like a minefield second time round and get skittled.
Dan in Wolverhampton
Watling 170, Santner 98
Santner moves to 98, wisely sending Watling back before he can take a risky second run.
Simon Mann
BBC Test Match Special
Well if it happens in this match, we're in for something absolutely sensational from here.
Andrew Samson
BBC Test Match Special statistician
It's only the fifth time New Zealand have scored 500 against England and they haven't won any of the previous four games.
Mitchell Santner does not rate Jack Leach.
Bespectacled slow-left armer on bespectabled slow-left armer carnage as he leathers another six down the ground.
Santner moves to 97.
BJ Watling taps a single to bring up the 200 partnership off 450 balls.
It's barely acknowledged by Walting and Mitchell Santner, fitting for the quiet discipline they have shown.
It even takes another ball for the Bay Oval PA to realise and announce the 200 stand.
Steven Finn
England bowler on BBC Test Match Special
He's just left looking extremely smug. I tried to bring him down a few pegs but it didn't work.
Jonathan Agnew
BBC cricket correspondent
What happened the last time New Zealand scored 500 against England?
They lost. Remind Bryan Waddle of that one.