Paralympian Olivia Breen produced personal bests in the 100m and long jump at the Loughborough International meeting.
Breen said: "It was the best day. I am so happy to have run a best of 13.24 seconds in the 100m and jumped a personal best of 4.7m.
"I can't believe I am currently world leader in my class in long jump and I hope that I can keep improving to hold on to this position.
"I am so excited and happy that all the hard work is paying off."