Image source, Inpho

England lead at the break...but only just.

Zoe Harrison has been class this tournament but she makes a poor error as she drops O'Brien's clearance. Very uncharacteristic but easily done.

This will be the final scrum of the half with the clock in the red.

The ball doesn't even make it into the scrum before England win the penalty.

It's fired into the 22 by Harrison. Can England finish the half on a high?

Katy Daley-Mclean
Former England captain on BBC Two

We know England's set piece dominates. We know Ireland have been dominating and really good in defence. But they gave England the opportunity. This game is all about taking those opportunities.

Ireland were showing good patience but Anna McGann spills it as she looked to get on the end of some quick passing.

We're into the final two minutes of the half.

Ireland have it again as they look for an immediate response.

They are just inside the England half as they chip away at the defence.

Ireland have been brilliant so far, but that came from one tiny error and England punished them to lead for the first time.

Just shows how careful Ireland have to be.

Abbie Ward wins the throw and here comes the maul....

Ireland do well to win the scrum and O'Brien clears.

Aoife Dalton had strayed in front of O'Brien from the kick and is offside, so England will have a good platform once again.

It's a very uncharacteristic performance by England so far as Botterman looks to quickly pass the ball on but it's forward into Irish hands.

Scrum for the hosts, but England will be all over it once more.

Image source, Getty Images

Tatyana Heard is into the 22 after a lovely pass by Zoe Harrison.

England are building here.

England get the shove on again but Aoife Wafer manages to bring it away before the penalty can be awarded.

O'Brien sends it clear but it's still in play, and England have ball in hand just inside the Irish half.

We're having another few gos at trying to get this scrum started.

Both front rows get a talking to, but with the clock running down this suits Ireland down to the ground.

Just 10 minutes left in the first half.

Image source, Getty Images

Okay, we're actually going back to an English knock on in the middle of a ruck.

The same point applies though as the Red Roses pack dominated the Irish put in last time around.

The ball was knocked on in a tackle by Dorothy Wall and England will have a scrum inside the 22.

This has been their one big area of strength so far. Can Ireland stop the English pack?

Katy Daley-Mclean
Former England captain on BBC Two

It doesn't get any better than that. It was a really good bit of identifying space. Players don't come much quicker than Costigan. There couldn't be a better woman to score against England.

When she's going full pace, no-one is keeping up with her.

Image source, Getty Images

England now have it in the Irish half as they look for an immediate response.

The forwards are making some hard yards and they are on the fringes of the 22.

You can't half tell Costigan is a Sevens player at heart. She was never being beaten for pace there - and Abby Dow isn't a slow player.

It's nothing more than Ireland deserve. They've been brilliant so far.