Hi again, I received a PCN for going through a motor prohibition sign without knowing. Here is the PCN...


There is also a video but I'm not sure how to paste the clip on this site.
From my knowledge, there is a restriction from one side of this sign. There is no restriction when coming from the back of this sign. I had a delivery the national theatre but was trying to find the stage door which I found out its on a road called stage door avenue. When I realised I was already past it, I decided to do u-turn immediately and unfortunately I did it just past this sign. As mentioned before, I believe there is no sign when coming from one direction so as I decided to do the u-turn, I was not aware of any restriction.
As I finished my 3 point turn, I went through the sign. At present, I can't recall seeing the sign as I went past it.
Here is the google map view...
https://maps.app.goo.gl/UKSL1f177aoexacm7Still trying to work out through my head, exactly how this happened. Normally, I would do a u-turn where there is space to do so. I'm guessing I thought I had enough space to do the turn without checking n( obviously I checked for pedestrians and cyclist etc). Anyway, is there a chance I can appeal as I don't recall seeing the sign as I went past it?