this is vintage bike specialist "sargent & co" by Clissold park.
My the other half is obsessed by his vintage Italian racer and I love riding bike myself.
You can imagine the person who runs this shop, random opening hours, greasy mechanical bits everywhere, over grown tomato plant pot by the window and beautiful vintage bikes. I bet he’s not really willing to let go some of the stocks he has. This is the most laid back looking shop ever!