Shabnim Ismail, who ate a banana during the drinks break, is replaced at the Cromwell Road End by left-arm seamer Chloe Tryon, but the runs keep flowing for England's second-wicket pair - with Sarah Taylor flicking one over short fine leg.

Here's a Tammy Beaumont reverse sweep from earlier which you may not have seen:

As the players finish their drinks, take a look at how Amy Jones' innings ended:

Charlotte Edwards
Ex-England captain on BBC Test Match Special

It made my weekend last week when my sister-in-law rang to tell me that my five-year-old niece Rosie Edwards wanted to come to cricket - with no pressure from me whatsoever. So I've bought her the new All Stars Cricket kit which they've designed for five to eight-year-olds.

Despite being in such a commanding position, there are a few nails being bitten in the England dug-out - Lauren Winfield, a reserve batter in this squad, the biggest offender.

Her erstwhile opening partner Tammy Beaumont is shuttling along nicely, reverse-sweeping with aplomb and closing in on her ninth ODI score in excess of 50.

That looks like drinks - England have Sussex pace bowler Freya Davies, one of the players awarded "rookie" central contracts the other day, on drinks-carrying duty, although she's not part of the "official" squad.

Ismail into her fifth over, and the fourth of this spell down the hill. Taylor is happy to pick up ones and twos at this stage.

It's overcast in Hove, but there hasn't been really any help for the bowlers in any respect today.

Of all the unforgivable sins in cricket, a no-ball bowled by a spinner is pretty near to the top of the list - if not top. Ntozakhe is punished with a free hit, and punished again as Beaumont bashes the free-hit ball over the bowler's head for two.

Charlotte Edwards
Ex-England captain on BBC Test Match Special

You've got a new batter in, and you've got three fielders in the off side who are all on the edge of the ring. They need someone in closer and straighter, in Taylor's eyeline.

Sarah Taylor, back on her home ground, is allowed an easy single off her first ball, with the infielders right back on the edge of the circle. Ismail tries a bouncer, but the grinning Beaumont helps it on its way for four.

With no third man in place, Beaumont gets the reverse sweep out of the locker and that's her sixth four.

When you consider England reached 64-6 in the 17th over at Worcester, being 70-0 after 13 represents a return to form.

This is better from Ismail bowling down the hill. After a single from Beaumont, Jones - bat waving like a baseball player as the bowler runs in - watchfully sees of the rest of the over.

And here are our first highlights of the day - Amy Jones hits a four, then launches Marizanne Kapp for six.

Phil Long
TMS statistician

This is Amy Jones' highest ODI score in England, beating the 19 she made at Worcester on Saturday.

Overseas, her highest score is 94 in Nagpur earlier this year.

Belatedly able to put the field back a bit, South Africa turn to off-spinner Raisibe Ntozakhe - who bowled a very miserly spell in mid-innings for the Proteas at Worcester. Three singles from the over.

Shabnim Ismail has changed ends and will have another go from the Cromwell Road End. There's a brief comedy moment when Beaumont tries to play Ismail into the off side and her bat flies out of her hands, towards short mid-wicket.

Lizelle Lee's wicketkeeping continues to leak runs, handing England four byes before Beaumont swipes another four over backward point.

Charlotte Edwards
Ex-England captain on BBC Test Match Special

I've liked Amy Jones for a number of years - she'd openly admit she's not taken the chances that have been given to her, but that 90 she scored in India would have given her a lot of confidence.

England continue to take advantage of the fielding restrictions - Beaumont hammers Khaka wide of mid-on for four to bring up the fifty stand.

Starting to look like a good toss to lose?

Charlotte Edwards
Ex-England captain on BBC Test Match Special

Very, very good batting from Amy Jones. She looks the real deal at the top of the order.

Eng 45-0published at 8 overs

8 overs

Jones 27 (30 balls)

Bosh! Amy Jones relishes taking on the short ball from Kapp, and lofts her over square leg - the ball lands squarely on the triangular foam protecting the boundary rope, so that's six! Only the second time she's cleared the ropes in ODIs.

Kapp responds with a brutal yorker which Jones does well to jam her bat down on. But then there's a shot-of-the-day contender from the Warwickshire right-hander

Charlotte Edwards
Ex-England captain on BBC Test Match Special

I've been impressed with how straight England have hit today.

And I don't think bowlers like bowling uphill, do they?