hi sorry for such a late reply - i though I posted this answer already but it didint work as i am not allowedto post links yet on this site.
they have changed the signs since they did google street view it used to be a "controled zone" it is now "permit holders"-
The street were I parked is Ashfield Road - just of mansfield road NG18 2AD you can see a white building on the corner of the street
if you use street view to go into ashfield road you can see there used to be signs on all the lamposts but they were obviously removed when they changed the main signs?????? just to catch people like me out I think
I have untill tomorrow to pay the reduced amount