I got the 'classic sourdough' by Flourish and it wasn't sour at all and had a pretty fluffy texture. I honestly would not have believed it was sourdough. I'll try one of the St Johns ones next.
Sorry you didn't enjoy it - it's my fave by far!
It's weird, I wonder if maybe the loaves were mislabed. It wasn't bad at all, it just didn't taste like sourdough to me.
Blighty in t'nam does
The Intrepid Fork does, in Hornsey, next to Tesco https://theintrepidfork.co.uk/