Near where I live is Wapping High Street (Just next to the Tower of London, City outwards). There are maybe 1,2,3 shops sprinkled around. A barber. That sort of thing. The rest are Warfs (Warehouse at river Front) which were part of the port of London before it moved down the Thames. If you wanted to go to the main shopping area you nowadays would go to Wapping Lane.

Now, the warehouses are there only for a few centuries and Wapping is much older. I don’t know if Wapping High street at that time was a vibrant shopping street with exciting retail opportunities, maybe. My point is things change over time.

This could be an interesting research project as you suggest and I wait with great anticipation for the first results that you hopefully will present here in some time. I am sure the history of High Streets in London could be fascinating.