Howard's right, some definite stitching together of images from different times going on.
If you use streetview to walk down Lower Fold to where it meets Town Street, you see sunny weather and some extensive road works (SMBC were resurfacing the road at the time).
But you approach from Town Street, the road works aren't present, cloudy weather appears, the shadows under street signs vanish and the covers over the traffic lights, due to the road works, suddenly disappear.
Steve.