It's not the former RBS HQ - which was 42 St Andrew Sq - but the branch at 36 SAS - a former Georgian mansion originally known (I think) as Dundas House.

It is however a wonderful picture.

Do you know if it was real or did someone Photoshop it?

Anyhow, I'm going to nick it and post it on Facebook, where my friends who used to work at RBS are more likely to see it...