Bobbie and Brandon MacDonald-Williams smashed their 1,500m freestyle personal bests as the Swim England Hertfordshire County Championships came to an end. The siblings were part of a successful Bishop’s Stortford Swimming Club squad that finished fourth overall in the competition. Bobbie took over a minute off her entry time to come fourth in the female 15-year age group (19min 53.25sec) while Brandon secured silver in the male/open 16-year age group by knocking 17 seconds off the 14-15 club record he set in November 2023 (17.01.13). The final day of the championships saw teams battling it out…