The V and A houses a public collection of prints and drawings of every kind imagineable from old master drawings to photographs, playing cards, fashion plates and wallpapers. You have to select what you want to see from the collection http://collections.vam.ac.uk/and book in advance. The behind-the-scenes route up to the study room of v and a is a treat alone (pictured)
My walk through the Heath often continues on to the Camden Arts Centre, a really fantastic exhibition space that runs workshops and courses as well as having a great café and bookshop to boot. I collect their exhibition booklets called File Notes - beautifully designed by James Goggin and Sarah De Bondt - some memorable shows include Eva Hesse Studiowork, The Bruce Lacey Experience and Serena Korda’s Aping the Beast. The latter concluded with a procession from the gallery up to the Heath, culminating in a re-enactment of The Battle of the River Plate in a pond. This is my photo of the Beast and the Boob Meteorite.
Great selection of books and magazine with a big focus on rare. out-of-print books Japanese photography. Can sends hours in this little shop. I'd try to avoid on Market day (Saturday) if you want to have a good look as it can get a bit busy for such a small space.
An unassuming glass door on an otherwise plain facade hides a cavernous space, with high ceilings and huge sliding partitioned walls producing excellent exhibitions in a space you'll want to go back to.