I think there is a good case.
I've looked at the tribunal and there are cases refused where drivers have turned right and u-turned, as clearly they would have seen signs. Once you go over the road lines and past signs the contravention is made out.
There is one case where the adjudicator couldn't be sure the line was breached.
But your video showing the approach from the left is convincing as the nearside sign is not pointing towards traffic.
An adjudicator also posted this which someone may be able to make sense of:
[ For future reference it would appear that by virtue of Schedule 3 Part 5 Para 1 Traffic Signs Regulations and General Directions 2016 the sign must be supported by (in this case) a TMO. The sign in question is not specified as a s36 Traffic Sign - column 6 of Schedule 3 part 2 specifies the applicable provisions of Part 4 only as 2 and 4, not 1 which is the application of s 36. If the Council is aware of authority or legislation to the contrary it might be wise to refer to it in any future case of this type]Anyway I think a challenge should be sent soonest and I would send:
Dear Harrow,
thanks for giving me the opportunity to challenge the PCN and I do so on the grounds that the no entry signage could not be seen on my approach from the left, where I only entered the mouth of Grove Hill Road to turn around as seen in your video.
I have been back to the location and made a video walking to Grove Hill Road, and the left-hand no entry sign is not positioned to be seen by a driver turning left.
I enclose a picture.
I trust you will agree that no contravention occurred owing to inadequate signage and look forward to your early confirmation of cancellation.
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