Aus 4-0published at 0.1 overs
Four to start.
Charlie Dean offers Alyssa Healy some width and the Australia skipper drives through Sophia Dunkley in the covers and away to the fence.
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Three more ODIs to come - first at Bristol on Wednesday (13:00 BST)
Mike Peter and Callum Matthews
Four to start.
Charlie Dean offers Alyssa Healy some width and the Australia skipper drives through Sophia Dunkley in the covers and away to the fence.
We're ready at Lord's.
England are, interestingly, going to start with the off-spin of Charlie Dean.
Emily Windsor
Oval Invincibles batter on BBC Test Match Special
Australia weren't at their best in the field at the T20 at the Oval. From what I've seen of that dressing room, they'll be desperate to turn it around.
Come on then, who leaves people on read in the England team?
The players have revealed all.
Ffion Wynne
BBC Sport at Lord's
We just had our food (a lovely lamb curry, for those wondering) and the queue was overlooking the Lord's nursery ground.
It's heaving - there are people queuing all the way round.
The scenes at The Oval and Edgbaston were equally amazing, and it still feels quite surreal.
Australia had a team photo, too - and then had a bit of fun...
England had a team photo in front of the famous Lord's pavillion yesterday. Blue skies... remember those?!
After Just Stop Oil protested at the second men's Test at Lord's last week and Wimbledon this week, the latest Sports Desk podcast asks what impact protests has on sport.
Sarah Mulkerrins in joined by BBC sports editor Dan Roan, managing director of Silverstone Stuart Pringle and historian Dr Fern Riddell - expert on the Suffragette movement - to discuss the impact of recent protests on sporting events.
Australia are the current holders on the women's Ashes and therefore only need eight points to retain the Ashes.
After a victory in the Test and opening T20 they currently lead the multi-format series 6-2.
England need nine points to win the Ashes.
Each of the white-ball games are worth two points apiece.
That means England need to win tonight and all three of the one-day internationals to win the series in theory. They can afford to tie one of the games, or one be rain affected, if they won the other three.
England: Danni Wyatt, Sophia Dunkley, Alice Capsey, Nat Sciver-Brunt, Heather Knight, Amy Jones, Danielle Gibson, Sophie Ecclestone, Sarah Glenn, Charlie Dean, Lauren Bell.
Australia: Beth Mooney, Alyssa Healy(capt & wk), Tahlia McGrath, Ashleigh Gardner, Ellyse Perry, Grace Harris, Annabel Sutherland, Georgia Wareham, Jess Jonassen, Megan Schutt, Darcie Brown.
Australia captain Alyssa Healy: "It is a good result for me to lose the toss, I didn't really mind what we did. We're happy to have a bat, we haven't done that first yet in this series so looking forward to getting out there.
"We had a good look at what went wrong [in the three-run defeat on Wednesday] and sometimes winning can gloss over some of the areas you miss out on so the other night was probably a good little kick up the bum for us to identify a few areas we need to tidy up. Hopefully we can fix them tonight.
"We need to be a little bit better in each facet of the game. To get to within three runs, knowing we can get better in each area, was a pretty good effort. Hopefully we can do it tonight."
England captain Heather Knight: "We're going to bowl. It's generally slow here so it's sometimes hard to gauge how many to score. We expect Australia to come really hard at us and we have to be prepared."
Both teams are unchanged.
We'll bring you the full XIs shortly.
Heather Knight has finally won a toss!
She fancies having a bowl.
Knight is used to captaining at Lord's - she's the skipper at London Spirit, who play their Hundred games at the ground.
Right, time for the toss.
Heather Knight and Alyssa Healy are out in the middle.
England Test and ODI opener Tammy Beaumont is on Sky Sports.
She's just said tonight "will be the start of England reigniting the Ashes".
Agree?
Evening!
England were a defeat away from Australia retaining the Ashes on Wednesday but delivered a three-run win at The Oval.
The win didn't chance the situation really.
England must win at Lord's tonight too or Australia are keeping the Ashes.
England have already kept the women's Ashes going once this week.
Will they do the same at Lord's and keep the dream alive going into the one-day internationals?
Time to find out.