Caudery won the pole vault with a first-time clearance of 4.45m, before pushing herself to equal her best performance of the year by going over at 4.85m.
The 25-year-old won world indoor gold in a breakout 2024 season, during which she broke the British record with a 4.92m jump, but failed to qualify for the Olympic final.
“I’ve just been finding my flow again and figuring a few things out, so I didn’t push it today, but it is really exciting to jump back over the 80s again and I’m hoping to attempt [the British record] soon,” Caudery said.
Nuttall sealed her place on the team by winning the women’s 5,000m in 15 minutes 46.90 seconds, having achieved the qualifying time before the championships.
But 19-year-old Innes FitzGerald, who achieved the qualifying standard in breaking the European Under-20 record in London last month, must wait to see if she is selected after finishing third behind India Weir.
Okoye confirmed his place in Tokyo by winning the men’s discus with a 65.93m throw, while Anna Purchase threw a championship record 72.96m to win the women’s hammer title – a distance within UK Athletics’ (UKA) consideration standard.