In reply number 3 you gave us FT64722658 and LS55WCU (you meant FR not FT). That is the vehicle which clearly has the PCN as I used the council website to watch it.
The black car behind, which I hadn't concerned myself about as it didn't get a PCN doesn't appear in the video until later and the camera operator, who appears to be a human, not a computer, has already selected an allegedly contravening vehicle to focus on.
Although the black car making its entry isn't shown we know that the exit was well and truly blocked to overflowing. If you haven't got a PCN you have been very lucky as you were 100%, in my view, in contravention.
I'm not going to give you any words to write (which experts don't generally do, they give you the ground and expect you to take it from there) as I think LS55WCU should pay the 50%.
If I am wrong about this and the thread has been hard to follow, start a new thread for the black car if the keeper has been issued with a PCN and see if any other expert thinks you have a hope in hell (you will gather that I don't).


(There was an error in my earlier post when I said 'black car' by which I meant the dark blue one - anyway the first car behind the white car. - Did you know that Guinness is dark red?)