Where were these construction workers in London, when photographed?

[MaryA]

I'm a little late with my answer too, but just wanted to say well done, it does look like the correct building has been identified, you can even see the change in the roof.

[ShaunJ]

Here's a better view of the building in Westgate triangle on Google street view. The corner section has been rebuilt but the stretch leading to the railway bridge looks very similar. And in Keith's picture I think the railway bridge is just visible behind the tree.

http://maps.google.co.uk/maps?q=51.538008,-0.057378&num=1&sll=51.536848,-0.058184&sspn=0.006295,0.006295&hl=en&ie=UTF8&layer=c&cbll=51.537978,-0.057071&panoid=WZVF-toEeOMwht0MkBtFow&cbp=12,270,,0,5&ll=51.537968,-0.056951&spn=0.001104,0.00327&z=19

[Ruskie]

Can I just say what wonderful detective work! Shaun's link above clinches it. It even looks like that tree on the right on google maps link might even be the same as the one in Keith's photo. 

[ShaunJ]

Just to save people flicking back to the photo

[EDWARDO]

the first chap standing on a beam bottom right.there is something on the beam do's it say something gass??

[Nick29]

the first chap standing on a beam bottom right.there is something on the beam do's it say something gass??

Funny you should say that.  I saw something there too, but I also saw some radiating lines on the print just above the letters, and I thought it could have come from another photo stacked on top.

[ShaunJ]

A great picture of the same spot in April 1971

http://www.flickr.com/photos/50780708@N02/5153903694/

[Nick29]

Just noticed something else - above the hoarding for the music company, there is another hoarding above and slightly to the right.  This has the word SIMONS diagonally across it 

[ShaunJ]

This has the word SIMONS diagonally across it

Solomon Simons was a cabinet maker at 113 Mare Street in the 1912-15 PO Directories