Paralympian Sascha Kindred continued his recent good form with two world records at the ASA National Long Course Championships in Sheffield.
Kindred was among GB's Paralympic gold medallists
Kindred improved his own world bests set earlier this year in the SB7 100m Breaststroke and the SM6 200m Individual Medley.
Rhiannon Henry also broke the old world record in the S13 50m butterfly with a time of 30.44 seconds.
All three times must now be ratified by the International Paralympic Committee.
There were also European records at the meeting for David Hill (S9 50m backstroke), who beat the mark in both the heats and the final, and Liz Johnson (S6 50m breaststroke).
A total of 26 British records fell during the championships with Claire Warne (SM5 200m IM), Rob Welbourn (S10 200m IM), Katie Haining (S7 100m freestyle), Kenny Cairns (S3 200m freestyle) and James Crisp (S9 100m butterfly) among those to set new marks.