Think this may be the oldest music venue in London? If it isn't, it certainly feels like it. I love the fact that you can feel the musical history as soon as you walk into 100 Club. Given it's central positioning I'm sure a lot of people of holding their breaths that it continues to stick around
The oldest public art gallery in London also is my local gallery in my neighbourhood. Opposite to the Dulwich Park where I walked with my puppy regularly. They have great collections of Dutch paintings as well. My husband found the original Dutch painting of the print at his home he was growing up with.
G.F. Smith's permanent showroom, in Central London. Visits are by appointments only — But I would definitely recommend making the visit. All of their stocks are beautifully archived, along with example publications, and a rotating series of paper installations in both the window & basement, courtesy of Made Thought.