European champion divers Tonia Couch and Sarah Barrow all but sealed their Olympic place with a personal best at the British Gas Diving Championships in Sheffield.
The 10 metre platform synchro pairing continued their impressive year so far with a score of 327.18 - beating their previous best set last month when they won the European crown in Eindhoven.
It was also a British record and underlined why no other pairing had decided to challenge them for an Olympic place that will be confirmed by Monday's team announcement.
"It was a little bit crazy because it felt like all eyes were on you," Couch said. "But with the PB everything is going to plan. We are working really hard. I dropped one of my dives so it wasn't the best we can do. If I got that it could have been 330 or above."
That sort of score would elevate them into Olympic medal contention but Barrow, who is set to go to her first Games, was not getting carried away with Saturday's individual platform still to come.
"It would be my first time (at the Olympics) but we still have a competition tomorrow so we can't relax," she said. "After that then I think, hopefully, we'll celebrate."
Nick Robinson-Baker and Chris Mears are set to join them on Monday's squad list after winning their third consecutive British men's 3m synchro title. The pair signed off for their Olympics with a score of 428.34 - just below the personal best they set when taking silver behind the all-conquering Chinese in Mexico two months ago.
"We're 95% sure that we are going to be going (to the Olympics) judging by that performance," Robinson-Baker said. "We went for it and had a cracker. We'd like to think that will secure our place on the Olympic team. We'll be all ears on Monday morning.
"The name of the game in diving is consistency and Chris and I have shown that for the past three years. We are looking stronger and fitter, everything looks sharper in the water.
"As you well know in a few weeks it's the Olympic final and hopefully we'll be there and smash it."