Eng 249-2published at 19.4 overs

19.4 overs

Sciver swats another six over cow corner. South Africa are being annihilated here.

Image source, Rex Features

Phil Long
TMS statistician

England have eclipsed the England men's highest T20 score, which was 230-8.

Shabnim Ismail to bowl the last over, Brunt forces a well-run two through mid-wicket, and clubs a single to long-on. She has 42 from 16.

Eng 240-2published at 19 overs

19 overs

Sciver 27, Brunt 39

Sciver moves around in her crease and powers an inside-out four through extra cover - then an attempted back-of-the-hand slower ball by Klaas flies out of her hand and literally does not even hit the cut strip. The extra delivery is a full toss which Sciver whacks over mid-wicket for six.

Klaas keeps Lackay company in the record books - she's also gone for 59.

Image source, Rex Features

With Marizanne Kapp off the field, South Africa have to go back to Klaas - and while the boundaries have briefly dried up, Sciver and Brunt keep plugging away with the ones and twos.

Phil Long
TMS statistician

Stacy Lackay has the most expensive bowling analysis in T20 internationals - 4-0-59-2. The previous record was 52.

Here's how it ended for Beaumont:

That's the record! Brunt blasts Lackay for a six - England have broken the world record score - then another six back over the bowler's head. A single off the last ball means Brunt has 37 from 12 balls.

That over went 6-4-2-6-6-1. Carnage.

CLOSE!published at 17.3 overs

17.3 overs

Eng 211-2

Brunt powers another four, then launches one into the air over long-on, Brits gets a hand to it and parries it back from the boundary - and acrobatically stops the boundary.

Eng 205-2published at 17.1 overs

17.1 overs

Fetch that one! Brunt launches a straight six into the new Somerset Pavilion, and England are past 200 for the first time in women's T20 internationals.

Van Niekerk to complete her spell - Brunt finds the boundary for the first time, while the powerful Barnsley right-hander picks out Klaas again in the field as she over-runs a slog-sweep to deep square leg and the ball goes through her for four.

Van Niekerk (0-38 from four) is bowled out - and England are 17 shy of the world record, with three overs.

Here's how Beaumont reached her ton..

Brunt dropped on onepublished at 16 overs

16 overs

Eng 188-2

The new batter is... Katherine Brunt, promoted up the order to number four to give it some long handle. And she has an early life when a cross-batted baseball blast over Lackay's head, from a full toss, is spilled at mid-off by Masabata Klaas.

Marizanne Kapp is led from the field - looks like she may not be able to come back for a second spell? Beaukmont picks out substitute fielder Andrie Steyn with a well-placed four, and then boshes another six over mid-wicket when Lackay serves up a full toss.

Here's that brilliant effort by Sune Luus which just failed to dismiss Beaumont...

Natalie Germanos
BBC Test Match Special commentator

Can we talk about the rugby? South Africa have beaten England with one game to go...

Sciver's job is just to give Beaumont the strike, which she does - another paddle over the wicketkeeper's left shoulder brings her 17th four. Sciver joins in the fun, slashing a four over short third man and toe-ending another over the keeper! 16 from the over.

The target for England must be 216, the world record which was set by New Zealand earlier this afternoon.

100 for Tammy Beaumontpublished at 14 overs

14 overs

Eng 159-1

A firmly swept four means Beaumont has her third successive international hundred (after those back-to-back ODI tons) from just 47 balls. It's the second quickest in women's T20 international history - only eclipsed by Deandra Dottin's incredible 38-ball knock for West Indies in 2010.

Eng 155-1published at 13.4 overs

13.4 overs

Natalie Sciver joins Beaumont, a single gets the opener on strike and she comes down the track to marmalise one towards cow corner, almost hitting the Sky commentary caravan/box. She has 97 from 45 balls...