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Summary

  1. Britain's Adam Peaty retains his title in 100m breaststroke
  2. Peaty finishes in 57.47 secs - a championship record; GB's Ross Murdoch finishes eighth
  3. Team-mate Ben Proud wins 50m butterfly title in 22.75 seconds
  4. James Guy and Duncan Scott both win respective 200m freestyle semi-finals
  5. Sarah Vasey qualifies for 100m breaststroke final
  6. Kathleen Dawson reaches 100m backstroke final
  7. Siobhan-Marie O'Connor finishes seventh in 200m individual medley

Live Reporting

By Caroline Chapman and Libby Dawes

All times stated are UK

Get involved

That's all from us tonight but what a night it has been!

Continue watching using the player at the top of the screen or on the Red Button.

Byeeee!

Medal ceremony

Ben Proud stands on the World Championship podium, collects his gold medal with 'God Save the Queen" blaring and the Union flag behind him...

He looks so.....

Well.

Proud
Reuters

'It was a test of character'

Siobhan-Marie O'Connor speaking to BBC Sport: "It's been touch and go whether I'd come. I didn't get what I wanted but I'm so glad I came. I've just realised how relentless sit its. Last year was the best year of training and this year has been far from ideal.

"It's going to teach me a lot. It was a test of character. I knew I wasn't in the shape I wanted to be but I've made the team and you don't get opportunity very often."

Rebecca Adlington

Double Olympic gold-medal winning swimmer on BBC Red Button

Siobhan-Marie O'Connor had to commit but she went out too hard.

She had a great start but after taking a long break, she hasn't got the base to back it up.

Siobhan-Marie O'Connor was just a little too tired but the crowd have gone mad here as their girl just took the title.

Hozzu is now a six-time World champion.

Unbeatable.

Katinka Hosszu
Reuters
Katinka Hosszu
Reuters

The crowd have just absolutely deafened the commentators in the arena...

Hozzu in lane 4, O'Connor in lane 6.

And they are off....

WATCH AGAIN: Victory for Proud in the 50m butterfly

Ben Proud pulls off shock win in 50m butterfly final

O'Connor's 'fantastic skills'

Rebecca Adlington

Double Olympic gold-medal winning swimmer

Siobhan is such a racer. She loves it and has fantastic skills. She has one of the best starts in world. She pulled out of 100m breaststroke to concentrate on this event, so she can give it everything she's got.

The main event...

Katinka Hozzu
Getty Images

Adam Peaty may be the big name in the pool for Great Britain tonight but for most of the Hungarians in the Duna Arena, there is only one person they are here to see.

Ok two. But it is the same person...

Katinka Hozzu - "The Iron Lady".

Three-time Olympic and five-time World champion Hozzu is the star of these Championships she is basically the reason Budapest is host city.

Expect the roof to come off when she enters the arena tonight...

Hozzu is also the world record holder in the 100m, 200m and 400m individual medleys.

In 2014, she became the first swimmer in history to earn over $1m in prize money.

She is in lane four of the 200m individual medley tonight.

GB's Rio 2016 silver medallist Siobhan-Marie O'Connor has a fight on her hands if she wants a place on the podium.

Men's 200m freestyle semi-finals

That went well for GB...

Results
BBC

Steve Parry

Olympic bronze medal swimmer on BBC Radio

What on earth are they putting in these men's meals back at the Team GB hotel?! They must have had some decent cereal this morning.

We could have two British men on the podium here. They will take the best two lanes in the final.

Scott wins second semi-final

Men's 200m freestyle semi-finals

Remarkable! Duncan Scott also finishes in first in his semi-final and he tops his team-mate James Guy's time!

The Scotsman comes home in 1:45.16.

Men's 200m freestyle semi-finals

Duncan Scott of Britain is up next trying to qualify for the men's 200m freestyle.

He's in lane six and looking strong early doors...

Mark Foster

Former freestyle world swimming champion on BBC TV

James Guy really is a showman. He is a big personality and he loves racing on these big stages.

I think it was also a really measured, really controlled race.

Guy
Reuters

Guy wins semi-final

Men's 200m freestyle semi-finals

James Guy on BBC Two, after coming first in his 200m freestyle semi-final: "The plan was to be relaxed but go in hard. It felt great. I know what I'm doing in the race. In the 400m I was a bit all over the place but this felt good."

Steve Parry

Olympic bronze medal swimmer

I think James Guy has just realised he is in the form of his life.

Guy
Reuters

Men's 200m freestyle semi-finals

James Guy was second at the 100m mark...and he comes home in first! He clocks a time of 1:45.18!

A brilliant race from the defending champion.

Guy
Reuters

Steve Parry

Olympic bronze medal swimmer

This atmosphere is like the darts...!

Men's 200m freestyle semi-finals

Britain's defending champion James Guy is going in lane four in heat one. He looks PUMPED.

Off we...go!

What can Guy do?

Men's 200m freestyle semi-finals

Rebecca Adlington

Double Olympic gold-medal winning swimmer

I think James and Adam Peaty have such a great relationship. They're room-mates and team-mates.

As we saw in Rio, James just gets better throughout the week.

Guy and Scott aiming for final

Men's 200m freestyle semi-finals

In the first heat of the men's 200m freestyle you'll find Britain's James Guy, the 21-year-old defending champion in this event.

Following him in heat two is team-mate Duncan Scott. Both swimmers were part of the relay squads who picked up two silver medals at the Rio Olympics last summer.

They are vying for a place in Tuesday's final

James Guy
Getty Images

Women's 100m backstroke semi-final (2)

Told you it would be quick... Kylie Masse of Canada records the second fastest time in history in the second semi-final.

Great Britain's Gemma Spofforth can breathe a sigh of relief. The world record is still yours Gemma.

So what does that mean for the final?

Britain's Kathleen Dawson has made the final and will be in lane eight.

Dawson
AFP

Proud is believing

Men's 50m butterfly

Mark Foster

Former freestyle world swimming champion on BBC TV

He's so humble. When he got on the lane line he didn't know what to do. He's not got arrogance. There wasn't that belief before but now he's believing. He's grown in confidence.

'I'm on the verge of tears'

Britain's Ben Proud, after winning the 50m butterfly world title, speaking on BBC Two: "I don't know what to say. I'm on the verge of tears. It's been my dream since I was six years old.

"Yesterday I was really stressed out today I was calmer and I wasn't thinking about winning. It's really helped. I thought getting a medal would be nice.

"The pieces of the puzzle have come together. I was panicking before as I couldn't get my clothes off but once I put my foot on the block it was just about me and my race."

Proud
AFP

Britain's Proud wins gold

Men's 50m butterfly

Britain's Ben Proud finished ahead of Brazilian Nicholas Santos in second (22.79) and Andrii Govorov (22.84) of the Ukraine.

Here's what he had to say after the race...

Women's 100m backstroke semi-final

Both British swimmers looking very impressive in that 100m backstroke semi-final.

Kathleen Dawson finished in third and Georgia Davies fourth.

We will have to wait to see if they make it into the final as the second semi has some very strong swimmers in it....

Dawson and Davies in action

Women's 100m backstroke semi-final (17:24 BST)

No messing around in Budapest. There are two more Britons heading for the water.

Georgia Davies and Kathleen Dawson are both aiming for a place in the women's 100m backstroke final.

Both ladies were gold medallists in the 4×100 m medley at the European Championships.

British swimming
Getty Images

#bbcswimming

Jonesy: Oh so Proud... Anything Adam Peaty can do..Ben Proud can do... World 50m Butterfly Champ...

He looks pretty calm considering he has just become the World champion. But he is speaking to Sharon Davies on BBC Two now....

He didn't breathe once through the entire 50m!! Ben Proud is the World Champion!

BreakingGold medal - Ben Proud

WOW!!!!!!

22.57 seconds.

Proud
AFP
Ben Proud pulls off shock win in 50m butterfly final

American Caeleb Dressel is the favourite here but Proud looks pretty determined...

Here they go.

Proud up next

Men's 50m butterfly

Up next for GB is Olympic finallist Ben Proud, who will be expected to challenge for a medal in the men's 50m butterfly final.

The 23-year-old came fourth in qualifying on Sunday, in a time of 22.92 seconds.

He is the reigning Commonwealth champion in this event and came third in the European Championships last year.

Ben Proud
Getty Images

Peaty receives his gold medal

Proud as punch.

Remember, he's only 22. How many of these gold medals is Adam Peaty going to collect in his career?!

Adam Peaty
BBC
medals
Reuters

BBC Two

GB's 100m breaststroke finalist Sarah Vasey: "I am absolutely over the moon with that! Only just off my best time!

"The atmosphere in here is amazing and I was watching Adam getting so nervous for him but it also got me really up for my race.

"I've said to myself I will just enjoy it and was happy to make the semi-final and coming out tonight I just said to myself, I have got nothing to lose, I may as well just go for it and i am really glad I did now!"

Vasey
AFP

Vasey qualifies

Women's 100m breaststroke semi-finals

YES! Britain's Sarah Vasey just sneaks into the top eight times for the women's 100m breaststroke final.

She comes come in 1:06.81, in her first world championships.

Women's 100m breaststroke semi-finals

Sarah Vasey in lane seven finishes in fifth place in the second heat. She's got a PB but we have to wait to see if she's made it through to the final.

American Olympic champion Lilly King finishes first with Ruta Melutyte in second.

Lilly King
Reuters

Women's 100m breaststroke semi-finals

In the first women's 100m breaststroke semi-final, Yuliya Efimova comes home just outside the world record in 1:04.36 - 100th of a second off it.

The Russian, who has previously been banned for doping, is the defending champion in this event. Katie Meili of America comes home in second.

Up next, Britain's Sarah Vasey.

Yuliya Efimova
Reuters