My dissertation was all about London's fashion boutiques in the late 50s and 60s. They may just look like funny little shops now, but their approach to visual merchandising and customer service was revolutionary at the time. I wish there were more colour photos of the boutiques but you can see a lot of the boutiques in colour in
this video.
Carnaby Street

Bazaar
Owned by Mary Quant, Alexander Plunket-Greene & Archie McNair, King's Road