JAZZ Carlin claimed her second gold in 48 hours at the British Swimming Championships – and admitted the effort took its toll.

Swindon's Carlin booked her place on the World Championship team with her impressive win in the 400m freestyle on Wednesday and followed that up with a commanding performance over double the distance 24 hours later.

But her time of 8:21.58 minutes was outside the qualifying standard, though she's likely to get the green light to compete after her earlier efforts in the 400m.

"It felt a bit tough, I didn’t really feel like I got into it and I felt a bit heavy in my stroke," she admitted.

"I was really happy with how the previous night had gone, that was a bit of relief so this was about going out and swimming it as well as I could.

"Not having anyone near you to push you on definitely makes it harder. I am not a speed swimmer so I really find it hard to get out fast.

"I am not too disappointed to have missed out on the World Championships time. I would have liked to have gone quicker but having made the Worlds time the night before I am sure I will be able to swim the event."

Meanwhile, Swindon-born Hannah Miley claimed added to her 200m butterfly gold with a silver in the 200m medley - though her main event is still to come.

Former world medallist and Commonwealth champion Miley is an eight-time national champion in the 400m medley but didn't compete last year as she'd already booked her spot on the Scottish team for Glasgow.

However, she is desperate to make her fourth World Championship team in her signature discipline, though reigning champion Aimee Wilmott is vowing not to surrender her title without a fight.

"I'm in a good place for the 400m, my 200m is a lot faster than it was last year, so that's great progression," said Miley, who touched home just behind winner Siobhan-Marie O'Connor.

"My title earlier this week was completely out of the blue, I never expected to get that. It is great to see that progression and I need to look at the splits to see which strokes I am on top of and which strokes I need to improve for the medley.

"I am really happy and chuffed with that result and it is great to be able to chase someone rather than being chased. Being chased is always quite stressful where as if you have someone in your sights it is so much fun being able to chase someone down because it pushes you to do things.

"Siobhan is such an incredible athlete and she knows how to swim the 200 medley better than I can. She has the speed and I have the endurance so I try and stay on her tail."

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