Herefordshire paralympic swimming star Nyree Lewis set a new world record in the 100-metre backstroke in the Short Course Championships in Llandudno.
Lewis posted a time of 1 minute 28.7 seconds as she warmed up for the World Championships in Eindhoven.
Sascha Kindred also won gold in both the 100m individual medley and 50m butterfly.
Kidderminster's Fran O'Connor broke two British records in winning gold in the 400 and silver in the 200 freestyle.
She also set a personal best in the 50m freestyle event.
Claire Cashmore, who is also from Kidderminster, won the gold medal in the 100m individual medley and took bronze in both the 50m and 100m freestyle events.
All four swimmers will be in the British squad that will compete in the World Championships due to start in the Netherlands on 15 August.
Lewis posted a time of 1 minute 28.7 seconds as she warmed up for the World Championships in Eindhoven.
Sascha Kindred also won gold in both the 100m individual medley and 50m butterfly.
Kidderminster's Fran O'Connor broke two British records in winning gold in the 400 and silver in the 200 freestyle.
She also set a personal best in the 50m freestyle event.
Claire Cashmore, who is also from Kidderminster, won the gold medal in the 100m individual medley and took bronze in both the 50m and 100m freestyle events.
All four swimmers will be in the British squad that will compete in the World Championships due to start in the Netherlands on 15 August.
