Kapp makes superb 150 from 45-4
Kapp's first century for South Africa
Falls to stunning Beaumont catch
Bosch 30, Luus 27
Cross 4-63, debutant Bell 2-47
One-off Test, day one, Taunton
Prakash Wakankar
BBC Test Match Special
New Zealand don't have any answers.
After the wicket of Ollie Pope it just liked like something may happen but Trent Boult's first over going for 17 just took the sting out of it.
Jeremy Coney
Former New Zealand captain on BBC Test Match Special
England are seizing every opportunity at the moment.
They haven't let a bowler settle for an over or two. They have just been putting them to the sword.
Bairstow 55, Root 79
Jonny Bairstow's fifty is the second-fastest in England Test match history.
Joe Root will really have to get a move on if he is to get to three figures.
Jeremy Coney
Former New Zealand captain on BBC Test Match Special
What a lovely innings. He has just been sprinkling shots all around the ground really.
Prakash Wakankar
BBC Test Match Special
That is a fantastic effort once again from Jonny Bairstow.
Another boundary, another fifty, another standing ovation for Jonny Bairstow.
He almost dismissively smashes Tim Southee through mid-on for four to bring up his half-century from just 30 delivieres.
Jonny Bairstow looks to go again but can't get anything on it.
Next up he doesn't quite time the hoik into the on-side and England can only run a single.
Prakash Wakankar
BBC Test Match Special
Yet another six! It was effortlessly tonked away.
36 to win
That's nearly into the rugby ground.
Jonny Bairstow skips down the track and heaves Michael Bracewell back over his head for another huge six.
He is making it look so easy.
Here's that beauty of a catch from Nat Sciver, getting rid of Sune Luus in the second over after lunch.
Since then, Anneke Bosch has joined Marizanne Kapp at the crease as they attempt to lead South Africa's recovery. They've taken the score on to 97-5, two wickets for Kate Cross and one each for Sciver and the debutants Issy Wong and Lauren Bell.
Daniel Norcross
BBC Test Match Special
That is a one-day shot really but Jonny Bairstow is in the form of his life.
45 to win
Jonny Bairstow is wheeling out the hits.
That's a gorgeous whippy, late cut down to third man for four.
Bairstow moves to 40 from just 25 balls.
Daniel Norcross
BBC Test Match Special
That was a good sliding stop from Neil Wagner. It was good quick running from Root and Bairstow though.
Shot.
Joe Root plays another of those lovely, flowing drives off his pads through square leg for four.
He barely seems to be hitting the ball.
The previous delivery Neil Wagner did superbly well to claw the ball back from the boundary to save his side a run. Incredible commitment.
#bbccricket
Sam Bone: The way @jbairstow21 is batting @root66 isn’t getting anywhere near a century.
This game is going along so fast it's hard to keep up.
Just 57 needed now for the win.
Daniel Norcross
BBC Test Match Special
Jonny Bairstow isn't going to have a look at Michael Bracewell, he does rather take a liking to spin bowling.
Jonny Bairstow's eyes light up as he sweeps over short fine leg for four. He goes for the same next ball and the ball escapes fine before being fielded on the boundary.
England run three to bring up the fifty partnership. Incredible.
Trent Boult is spared any more treatment from these two. One comes Michael Bracewell.
Vic Marks
Former England spinner on BBC Test Match Special
Joe Root will have to put a fine in the team kitty for leaving a ball there.