Adam Peaty broke the championship record in the 100m breaststroke heats at Glasgow 2018, with team mates James Wilby and Ross Murdoch finishing in second and third quickest respectively.
The defending champion broke his own CR with a time of 57.89, but said breaking the World Record was not on his mind as he went into the semis later today.
The 23-year-old said: "Today I had a job to do, and I've got an even more important job to do later.
"I'm in good shape, so who knows what could happen. I've got a ban - I'm not talking about 56, I'm not talking about World Records I'm just getting back to enjoying it.
"I want to rebuild that confidence people have in me - this is what I was born to do. I was born to race and in a home arena I can really thrive."
Despite the strong performance, and SB, Murdoch will not progress to the semis as only two from each nation go through.
The 2018 Europeans started well for the British swimmers, with Aimee Wilmott and Hannah Miley qualifying for the final of the 400m IM. Abbie Wood came in tenth fastest overall across the heats.
Nick Pyle, fresh from his European Junior success in Helsinki, qualified for the semi-finals of the 50m backstroke event in 17th, with team mate Luke Greenbank in 38th.
Alys Thomas progressed to the semis of the 100m butterfly event in 11th, despite describing the race as "messy" with Charlotte Atkinson also qualifying in 17th. Emily Large, one of five team members to have competed at both junior and senior European level this summer finished 20th.
The 4x100m freestyle women's team, made up of Lucy Hope, Anna Hopkin, Ellie Faulkner and Freya Anderson were seventh quickest in the heats, meaning they made this afternoon's finals, but the men's team, Calum Jarvis, Craig McLean, James Guy and David Cumberlidge, missed out of the opportunity to progress after finishing 10th in the first time Britain has contested this event since 2013.
Stephen Milne and Jay Lelliott both narrowly missed progressing in the 400m freestyle event, finishing 12th and 13th overall but Milne managed a season's best performance in the process - one of the key targets for the British squad at this meet.
Anna Hopkin narrowly missed the chance to go through to the 50m freestyle semis later, missing the qualification spots my one place in 19th. Freya Anderson finished in 24th in the heats and Lucy Hope 38th.