I looked at the thread you referred to, but the OP has not given us the outcome yet, or even if he took it the whole way.
Looking at your case, clearly the advance sign is totally obscured, but the right turn into the street involves slowing down to pass the traffic island, then going into the marked-out right turn lane. The signs look very visible on GSV, so this would not be a slam-dunk win at London Tribunals. Croydon, of course, will refuse your reps like they do 99% of the others, (and probably 100%), because they just want your money.
As I said in the other case, it's down to your attitude to risk. You have one plus point, the obscured advance sign, but need to firm up on why you missed the fairly prominent restriction signs at the entrance to the street. Were you also following satnav ? It seems to cause a lot of PCNs in London.
