Sciver & Davidson-Richards hit centuries as England recover brilliantly to close on 328-6, leading by 44
Sciver ends on 119*, Test debutant Davidson-Richards caught for 107 off final ball of day
Hosts were 121-5 after lunch in reply to South Africa's 284
Jones bowled by spinner Mlaba for a duck, Captain Knight (8) run out
Bosch also traps Beaumont (28) lbw & bowls Lamb (38) after England openers put on 65
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Georgia Elwiss
England all-rounder on BBC Test Match Special
Alice Davidson-Richards seems very superstitious. She's got a lots of quirks and twitches.
She does a lot of bat twizzling and tapping the handle and her gloves and a trot off to the side.
Tap, twizzle, trot, back - there's definitely a rhythm to it.
A tidy over from Mlaba concedes just a single as Alice Davidson-Richards almost plays on to her stumps.
That's probably the only 'chance' she's given. She's looked perfectly at ease upon her return to international cricket.
I can't unhear that now. I'll think of it every time I hear Sune Luus.
Georgia Elwiss
England all-rounder on BBC Test Match Special
You can tell Sune all about how much you enjoy her name after the game!
Henry Moeran
BBC Test Match Special
Sune Luus' name fits perfectly into the ABBA song 'Voulez-Vous'
"Sune Luus, a ha"
Spin from both ends as Mlaba continues. Just two from the over, with one coming from a filthy half-tracker. Nat Sciver looks disgusted at the fact that she was only able to take a single from it rather than send it to the stands.
Georgia Elwiss
England all-rounder on BBC Test Match Special
I'd like to see England be a bit more positive with a ball that is 63 overs old. With this spread field they've got the chance to score runs quickly and up to around four an over.
They have a real opportunity and still a lot of time to bat.
Sciver 56, D-Richards 21
Sune Luus' first over was a bit ropey to say the least but she seems to have settled in to a bit more of a rhythm now.
Her first ball jags past Davidson-Richards' outside edge and just a single comes from the over.
Marizanne Kapp is tucking in to some sweets in the dugout.
If that's the fuel you need for scoring ridiculous 150s, I'm all for it.
Anyway, play is resuming. Sune Luus bowling to Alice Davidson-Richards.
If you missed Anya Shrubsole and Katherine Brunt reminiscing on their careers during the lunch break, you can listen now on the Test Match Special podcast.
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Without any context, that sentence doesn't make much sense.
And I'm afraid I have no context.
Alex Hartley
Former England bowler on BBC Test Match Special
Anya Shrubsole didn't offer me a pancake.
But Nat Sciver stood firm and eased England past their follow-on target with a calm, measured 50 from 110 balls.
England will need her to 'do a Kapp' and bat through the innings.
Two further wickets fell as Amy Jones became Nonkululeko Mlaba's first Test victim and Sophia Dunkley nicked Anneke Bosch behind to give the seamer her third wicket.
Bosch has been the pick of the bowlers so far with 3-32.
Thanks, Sam.
A fine fightback from South Africa. I was concerned after this morning session for their bowling attack - it looked very samey and unthreatening.
But the run out of Heather Knight first ball after lunch set the tone for an enthralling session, although perhaps tilted slightly in the favour of England given that Nat Sciver is still there on 56.
Right, after a highly eventful session it's over to Ffion Wynne to take you through tea and beyond.
I'll join the players in grabbing a brew!
Alex Hartley
Former England bowler on BBC Test Match Special
It would make a really interesting Test match and exciting for the women's game if South Africa could bowl out England for a similar score but it's going to be a very interesting and exciting session after tea.
Sciver 56, Davidson-Richards 20
A much tidier over from Mlaba to end the session. South Africa will be much the happier of the two sides after taking three wickets in the first hour after lunch.
Sciver and Davidson-Richards have dug in since then, adding an unbroken 55 for the sixth wicket. England are 108 runs short of matching South Africa's first innings total.
Alex Hartley
Former England bowler on BBC Test Match Special
England have to be careful here with Luus. She's been really inconsistent with her bowling but she is capable of just surprising the batters.
A very handy over for England, nine from it as Luus really struggles to find her length. The fifty partnership between Sciver and Davidson-Richards has also come up now.
We'll have time for one more over before tea.