Lampshade frame makers (once)

I love discovering old signs like this one that I came across when I took a wander through Fitzrovia this evening on my way home from work.
There were 4 signs altogether: two identical lampshade ones, another telling me that they had also been wireworkers and spotwelders and one with the name of the company - Heinson Bros., 48 Whitfield St and the old phone number Museum 4645 (the same dialling code as the Arofsa Hotel in Gower St.)
I was almost going to put all of them together in a collage but in the end decided just to blip this one.
(Sneeze, sneeze...)