The 28-year-old Asher-Smith beat Neita, who had already assured her spot on Team by winning the 100-meter gold on Saturday, by running a championship record of 22.18 seconds.
Several talented young athletes excelled beneath menacingly black clouds on an exciting final day of competition in Manchester to guarantee they would represent the team for the first time in Paris.
In one minute 58.66 seconds, Phoebe Gill, 17, outran Jemma Reekie in the 800 meters, and the two competitors joined Olympic and world silver champion Keely Hodgkinson at the Games.
he 23-year-old Amber Anning won the women’s 400m in impressive fashion, clocking a championship record 50.47secs ahead of Laviai Nielsen, who joins twin sister Lina on the Olympic team, while another rising star Charlie Dobson dominated the men’s event with a time of 44.56secs.
There was drama in the men’s 800m final, won by 22-year-old world bronze medallist Ben Pattison in 1:45.49, as world 1500m champion Josh Kerr suffered a fall as he attempted to pass Elliot Giles on the inside in the closing stages – but was unharmed.
Pattison, who claimed a surprise first global medal in Budapest, was followed across the line by Max Burgin, also 22 and now set for an Olympic debut.
Matthew Hudson-Smith stormed to the men’s 200m title with a personal best 20.34secs as the world 400m silver.