Harry Wood
Yes. I went to look too. The plaque says "L Rob Hubbard's Fitzroy house. Opening times 11am-5pm By Appointment. Please call 020 7255 2422 to arrange a visit." .  Searching turns up this: http://www.fitzroyhouse.org  

It *could* be tagged as a museum. But... a house with some memorabilia which you can only visit by calling a number...  I'm not sure if it qualifies really.

I see that SK53 has already added website and phone number details to the node, presumably after seeing the same plaque:
https://www.openstreetmap.org/node/2622783204/history

So I'd say there's nothing more to add.