Hi Clive.
A couple of points.
1. Black & White points. Set the black point to the man on the black & white sign, set the white point to the whitest part of the out of order sign. It will stop the image looking washed out.
2. Converging verticals. You've evidently taken the image pointing down, hence perspective converges the verticals. Sometime you can avoid this in camera, sometimes you can't. In PS you can skew out the image at the bottom (both sides by the same amount), to correct the convergence.
Spot on theme though, but 5 mins in an editor would improve it greatly.