RJ & J Picketts in Benfleet, was my local bike shop, and I often walked there after school, 50 years ago. That went long ago.
However, the bike I wanted aged 13, was a Claud Butler Electron, in yellow and white. There was one of these at James Brownings shop in Chalkwell. And that is still going strong as "James Browning and Daughter", supplying clothing and accessories to cyclists.