Morning,
I've received the rejection in the post this morning and re-read it (the same one I posted on here earlier, I haven't sent anything to the tribunal as yet). They rejected because, "...our camera evidence shows your vehicle disobeying a 'no-entry' sign... The CCTV footage shows the vehicle stationary before the restriction then reversing past the no entry signs and road markings..."
On Google Maps back in March 2017 there was a lamp post parallel with the current one and both had 'no-entry' signs on them:

By Sept 2017 one lamp post had been removed (ahead of the dedicated cycle path being installed) and the 'no-entry' sign removed from the remaining post:

The 'no-entry' signs reappeared at some point since last summer (the last time on maps you can see they're missing). The NO ENTRY roadmarking is set well back from the posts and so shouldn't be used as a guide. I've marked up the current overhead view in the snip below:
- The red dots are the posts the current 'no-entry' signs are fixed to - the original lamp post (on the left as you drive) and a post which is set back from Union Street and belongs to Redcross Way. They're not in line with each other and are well ahead of the NO ENTRY road marking.
- The green rectangle is the spot I reversed in to.
- The purple dot is the post where the camera was fixed and the purple lines are its lines of sight. As per the video evidence they provided the camera is unable to see either sign post, the view is blocked by a tree on the left and a house on the right
As such, I don't think they have any evidence that my car actually reversed past these signs:

I just wanted to provide this in case it helps, thanks.