Had a good experience at Harold & Leslie last weekend. Despite the salon being basically a very small cramped space at the back of a coffee shop the service I received was good. The stylist (didn't catch her name) was honest about what she thought I had to do if I wanted to grow my hair - mostly wait! She spent a fair amount of time tidying up my hair to ease the process however and I was pleased with the results. She took the time to listen and explain things to me which felt really good.
At £30 this is a pretty good deal despite what the salon looked like ;)