Sisters Maayan and Lia Radus were among the young Jewish athletes to improve their best performances in the Watford Open Graded Meeting series.
Maayan Radus, 10, recorded a 1,500m best of 5:33.88 to place third in the UK under-11 rankings, while Lia, 12, cut her respective 800m and 1,500m times to 2:31.10 and 5:10.98.
Their Shaftesbury Barnet clubmates Jessica Hurley and Judah Yawitch also set 800m PBs at Watford. Hurley, 14, recorded 2:21.36 while Yawitch, 11, improved his best to 2:27.56. He also sealed victory in the Eastern Young Athletes League at Stevenage with a new 1,500m best of 5:02.9.
Colette Hurley, mother of Jessica, moved to seventh in the UK V50 400m rankings by recording 69.24 at Watford.
Sophie Dowson, 15, took victory in the Saucony Hampshire Grand Prix in Basingstoke, with a pole vault clearance of 3.20m.
Allana Edwards, 14, recorded 50.27 in winning the 300m hurdles event in the Trafford Grand Prix at Stretford.