Tom Daley and Peter Waterfield all but confirmed their place at London 2012 with 10m platform victory and a personal best at the Olympic trials.
The synchro pair achieved a total of 475.77 but will not be officially named in Team GB's squad until Monday.
"To come here and get a British record means it's all looking good," Daley told BBC Sport.
"There's still room for improvement but we're looking forward to hopefully seeing our names on that team sheet."
Daley and Waterfield, who won World Series overall gold in April, have come a long way since the disappointment of finishing seventh at the Olympic test event in February.
"That was the first event of the year and also the home crowd brought a lot more pressure," admitted Waterfield, who won Olympic silver alongside Leon Taylor in 2004.
"We've done a lot more competitions this year and have been improving so, with a little more work, I think we'll be right up there."
That means rivalling the Chinese pair Qui Bo and Huo Liang who won World Championship gold in Shanghai last year.
"They're are doing really well at the moment," said Daley.
"They are putting in really good dives and difficult dives too, so it's going to be tough [come the Olympics], but we're going to give it our best shot."
It was a similar story in the women's 10m synchronised event with European champions Tonia Couch and Sarah Barrow also attaining a British record, en-route to gold.
The divers, who won bronze at the Olympic test event at London Aquatics Centre in March, were the only competitors in the British trials final.
Couch and Barrow's competitors chose to rest ahead of Saturday's key 10m individual event.
"It was quite hard being the only pair in it but I think we dived really well," Barrow told BBC Sport.
"We've been stuck on 319 for so long, and have done it three times, so we've been itching to get over that 320 mark and 327 was great."
In the men's 3m synchronised springboard final, Beijing Olympian Nick Robinson-Baker and partner Chris Mears earned a relatively comfortable victory with a total of 428.34, which was just outside of their personal best of 436.
In the women's 3m synchronised springboard final, Rebecca Gallantree and Alicia Blagg confirmed their status as Britain's number one pairing.
They attained a comfortable 24-point win over Francesca Del Celo and Grace Reid to make them favourites to earn spots in the GB Olympic team.
Saturday will see the highly-anticipated women's 10m individual platform final take place, with Tonia Couch, Sarah Barrow, Monique Gladding and Stacie Powell all likely to be competing for just two places in the Team GB Olympic squad.