harg
I've drawn in two more buildings visible on bing near where your marker is.

http://voicearchive.co.uk/contact-office-or-person/ gives an address of Junction Road so seems more likely to be the building to the West. 

http://www.adrenaline.london/contact-c24vq gives an address of Woodlands Road but maybe they have moved and not updated their web site? Are they in the other building?

