Swimming on A Hot Summer Evening

My family lived in Stanmore, Middlesex and on a hot summer evening (yes there were some!) my dad would pile mum and I into his little 1932 Austin 7 and off we would go to the 'swimming bath' at London Colney. I loved it, occasionally dad would swim with me but most of the time he and mum would sit and watch me having the most glorious time. I remember there were horses in the field behind the pool and I enjoyed watching them too, but that pool was the prize, I never wanted to come out and would still be swimming in the dusk... I used to BEG to go there whenever it was warm and was always so thrilled when it paid off! I was born in 1944, so all this would have taken place in the late 1940s and early 1950s...