A slow first 50m for James Wilby...

Commonwealth silver medallist James Wilby will be competing for Britain in lane four in the first semi-final. He qualified second fastest and is a strong favourite to finish on the podium.

There is no place in the semis for Scotland's Ross Murdoch - despite finishing just 0.2 seconds behind Wilby in the heats - as only two Brits can qualify and Adam Peaty was the fastest.

Alessandro Pinzuti (ITA)

Andrius Sidlauskas (LTU)

Ilya Shymanovich (BLR)

James Wilby (GB)

Arno Kamminga (NED)

Giedrius Titenis (LTU)

Fabian Schwingenschloegl (GER)

Erik Persson (SWE)

Adam Peaty speaking after his heat to the BBC: "It was very controlled. I had a plan to control the emotions. I went out there and used the crowd. I enjoyed it. This is the real me and hopefully tonight I can make a statement again and then tomorrow, who knows?

"I feel strong. I struggled without the power as I tried to lose too much weight going into the Commonwealth Games. But right now I'm enjoying it and that's important. I just want to make my family proud."

On Scotland's Ross Murdoch missing out despite finishing third fastest: "That's the way sport is. If you want to race the best, come to Britain. We have proven it with three guys on 59 seconds."

Image source, Getty Images

Now for the big one!

Britain's James Wilby and Adam Peaty are in the pool for the men's 100m breaststroke semi-finals.

Oh no! She misses the final by two one hundreds. So close for Alys Thomas.

It was a good start from Alys Thomas and it's given her a chance of qualifying. She finished in sixth...

Will her time be quick enough?

Alys Thomas and Sweden's Sarah Sjoestroem, who won the 50m freestyle semi-final just moments ago, up next.

Adrian Moorhouse
1988 Olympic 100m breaststroke champion on BBC TV

It was a little bit slower than we thought, that semi-final, with just the one swimmer swimming under 58 seconds.

Charlotte Atkinson will be a little disappointed. She finishes in a time of 59.39 seconds down in seventh place and won't make it through to the final.

Britain's Charlotte Atkinson races in lane eight of the first semi-final of the women's 100m butterfly. But all eyes will be on the second semi-final as Olympic champion Sarah Sjoestroem takes to the pool shortly after competing in the 50m freestyle.

The Swede set the World, European and Commonwealth records at this distance in 2016 and is expected to dominate again in these championships.

She will be up against Britain's Alys Thomas in lane seven.

Image source, Getty Images

Romania's Robert-Andre Glinta wins the second semi-final in another quick time. He finishes fastest ahead of Kolesnikov.

Britain's Nick Pyle finishes in seventh and misses out on a spot in the final.

Adrian Moorhouse
1988 Olympic 100m breaststroke champion on BBC TV

That was a great swim from Kolesnikov. The rise of this swimmer is just phenomenal to watch.

Russia's Kliment Kolesnikov posts a new junior world record to take the first semi-final after a blistering 50m.

Britain's Nick Pyle is up next.

Up next is the men's 50m backstroke semi-finals.

Britain's Nick Pyle goes in the second semi-final in lane eight while Russian favourite Vladimir Morozov is in lane five in the first race. He is the fastest on paper in the field and won gold in this event at the 2014 European Championships.

Tom Daley
Olympic medallist on BBC TV

I think you do need setbacks and that kick to give you the motivation. If it is all plain sailing all the time you can get complacent. It gives you things to work on in your training. I think those lessons are what will make Adam Peaty stronger.

Adam Peaty had to settle for silver in the 50m breaststroke at the Commonwealth Games after a surprise defeat by Cameron van der Burgh.

But since then, he has delivered much fighting talk and is in prime position to pick up a gold medal in the men's 100m breaststroke.

His semi-final is minutes away...

Image source, EPA

World record holder Sarah Sjostrom is through to the final. She wins in 23.92 seconds which is slower than Pernille Blume. The Swede has the semi-finals of the 100m butterfly coming up very shortly so she'll have to rush off quickly to get ready.

Denmark's Pernille Blume wins the first semi-final by at least an arm's length. Incredible swim. It's a new championship record too!

Over to you Sarah Sjostrom...

But first up are the women's 50m freestyle semi-finals.

Swedish star Sarah Sjostrom, the fastest swimmer in the field on paper this year, goes in the second semi-final of the women's 50m freestyle.

She won triple European gold in 2016 and Olympic gold in the 100m butterfly in Rio so is a strong favourite to qualify and take gold in Saturday's final.

Rebecca Adlington
Double Olympic gold-medal winning swimmer on BBC TV

What Adam Peaty has achieved in swimming is 10x more than I ever achieved. It is phenomenal and he is such a role model.

Image source, Getty Images