In 2014, Sally Shields became World Champion and broke two British records for 50m and 100m Breaststroke. Her 50m time was 40.20 and her 100m time was 1.28.97
Her best times have put her in the all time top 10 for her age group and these can now be viewed amongst other masters greats at this website:
https://www.fina.org/H2O/index.php?option=com_wrapper&view=wrapper&Itemid=636