Thanks for your kind words everyone, looking at the two versions together, I agree that the black & white works better.
@Pretzel - It does feel a bit more sinister... some other versions I tried first were either "too grey" or blocked out the shadows, the effect I landed on here was the "Wet rocks" from Silver Efex which I then customised a little to suit. York is well worth a visit if you are ever over this side of the pond & there are more shots from the city in my "Every so often" thread in the 365 section
@montignac - I'm glad the picture stirs some memories... I think I have succeeded if the shot makes Pretzel want to visit, and you to return!
@Krs_2007 - As Marcel & yourself touched on, there is a tilt-shift effect which I applied in ColorEfex, but I rotated the filter to the line of the street.
Thanks again everyone!