Katie Matts and Georgia Coates won their second individual medals of the 2015 World Junior Championships in Singapore.
Stockport Metro swimmer Matts added 100m Breaststroke bronze to her bronze in the 50m Breaststroke from earlier in the meet.
Having turned 17 on Tuesday, Matts celebrated her birthday with a personal best swim, clocking 67 seconds for the first time to become the seventh fastest British female 100m Breaststroke swimmer in history on 1:07.96.
Coates also became the seventh fastest Brit of all time with her final effort as she claimed bronze in the 200m Individual Medley, adding to her silver from the 400m IM.
After turning in fifth with 50m to go, the City of Leeds swimmer powered through the field in the freestyle leg to touch nearly two seconds fastest than her PB in 2:12.74 - a time that would have landed her gold at this year's European Games in Baku.
Matts' Stockport Metro teammate Holly Hibbott finished fifth in the 400m Freestyle final as she took down an eight-year old British 15 Yrs Age Group record.
Having already lowered her own British Age Group record over 800m Freestyle in Singapore, Hibbott took ownership of the 400m Free marker, clocking 4:11.29 to finish fifth in the final and duck under Ellen Gandy's 4:12.75 effort from the 2007 British Champs.
City of Birmingham's Chloe Finch was also in the 400m Free final, finishing eighth in 4:12.73 while Taunton Deane swimmer Charlie Attwood was seventh in the 200m Breaststroke in 2:15.04.