South Africa win by six wickets
First Proteas side to reach a World Cup final
They will face defending champions Australia on Sunday
SA post 164-4 after fifties by Brits and Wolvaardt
Brits takes four catches, including one-handed stunner to dismiss Capsey
Ragged England lose 5-26 in 22 balls to fall to defeat
Georgia Elwiss
England all-rounder on BBC Test Match Special
Dunkley doesn't get all of it and probably picks out the tallest fielder in South Africa's side.
But she's done her job and helped England of to a good start here.
Dunkley c Brits b Ismail 28 (SA 53-1)
Sophia Dunkley is out now! She tries another aggressive swing but chips a catch to mid-wicket.
There's a roar of delight from the home players and crowd. This game!
Georgia Elwiss
England all-rounder on BBC Test Match Special
It's been really positive for England's batters as we've expected. It's the way they've been playing. 160 is a par score and that start will settle some nerves.
Daniel Norcross
BBC Test Match Special
Suddenly the South African fielders are biting their nails because England are off to a flyer.
Need 112 more runs from 90 balls
This is ferocious from Sophia Dunkley.
We've been told England will attack in this tournament. Under the highest pressure yet they're doing just that.
England's south Londoner opener thrashes three fours in this latest over.
Georgia Elwiss
England all-rounder on BBC Test Match Special
I'm happy.
Daniel Norcross
BBC Test Match Special
England have given themselves a bit of wiggle room.
Wyatt 16, Dunkley 15
Shot! There's nothing fortunate about this one. Ayabonga Khaka goes full but Danni Wyatt slashes hard. The balls flies off her bat in a flash.
I sense everyone is currently trying not to bring about the commentator's curse here. It has been a good start.
Georgia Elwiss
England all-rounder on BBC Test Match Special
Fortune favours the brave...
Another edge from Dunkley, this time off seamer Ayabonga Khaka. Sinalo Jafta squeals behind the stumps but it's four.
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Mark: Liking England’s attacking mindset. Clearly trying to get ahead of the game. Nerves, what nerves? On a less positive note, across the board some of the fielding in this tournament has been embarrassing.
Target 165
The relentless action continues as what looks like a good stop from Shabmin Ismail on the boundary is ruled four, I think because replays show the boundary sponge was in the wrong place.
Sophia Dunkley edges another boundary to end the over.
Georgia Elwiss
England all-rounder on BBC Test Match Special
Just the start England wanted. There were some angry faces when they marched off the field.
We've got two openers who didn't do much in the field and have spent 20 overs looking forward to batting on this wicket.
Target 165
Woooft!
Danni Wyatt ends up on the floor after ducking out of the way of a vicious bouncer from Shabnim Ismail.
The keeper cannot stop it behind the stumps. It's four byes this time.
England are off to a flyer and have been given a fair bit of help.
Georgia Elwiss
England all-rounder on BBC Test Match Special
Oh dear! I think it got quicker after it went off her knee. Not the start South Africa would have wanted.
Misfield. Four runs.
Settle down everyone!
Speedster Shabnim Ismail is going to share the new ball.
England could have been chasing even more were it not for Sophie Ecclestone's wickets at the end.
Ffion Wynne
BBC Sport in Cape Town
England should chase this total down. They have been batting so well throughout the tournament.
But if they do, they'll have got away with it massively after that bowling and fielding performance.
The crowd is right behind South Africa now.
Target 165
I think we're all going to need a long lie down at the end of this if that over is anything to go by.
Dunkley is in by about a foot.