OK, you have "personal reasons", but your car registration is visible the whole time it's on the road for all to see. At the moment, and also from your second reply, you look to be 'bang-to-rights'. For your information for future driving in London, virtually all bus stops with a shelter like the one in the GSV view are controlled and stopping in them is barred.
The sign in the GSV extract says "No stopping except buses"
[Do both roads of the junction need to be named exactly and timings on the second line of the PCN have to be included to validate it ?].
Considering the bus stop is not on the junction, (how could it be !), I am surprised they have used two street names as the location, because there is only one bus stop on Station Road on that side, but I suspect it is not an appeal winner.
As for the timings, I suggest you look at their video, (the sole evidence), and satisfy yourself the time on the PCN is correct.
Essentially, you appear not to have realised the restrictions for bus stops and their enforcement using CCTV, hence the PCN. I can only suggest you submit representations based on mitigation explaining the circumstances, (your son). Post up their reply here when you get it.