In 1950 Blooms was 125,126 & 127, which must be the first building going away from Guest St. On the map 127 is marked furniture factory, and it looks as if the part of the site right next to Guest St had been demolished. Then there is a big building(s) marked 131-135, which must be the darker building, then a wall, which I take to be where there are assorted buildings set back from the road, and then the multi coloured block (Howlett's) , which I take to be the block marked "Metal works" with a gate (which is outlined in white in the photo) in the middle corresponding to the crossed gateway on the map, followed by the block marked 140 on the map. I may be wrong, but that seems to me to be the most likely.