Query re cameras on Robhin Hood Lane slip road

[sast]

There is a slip road off the A3 northbound just before Robin Hood roundabout. This slip road is no entry from the A3 during certain hours - 7.30 and 9.30 am I think. It rejoins the A3 just by the roundabout. I didn't realise it was no entry and did turn into it twice off the A3 at about 8 am so am now expecting police summonses. But does anyone know for sure if there are traffic cameras there? Thanks