I seem to recall driving down to the beach years ago, and one of the car parks there had a sign that practically said if you park over the line you'd get charged for two tickets. Seems OK for a car park to threaten you with being charged twice, but when some poor sod does preemptively pay twice, he then gets further fined.
I also wonder for the sake of the £90 fine, which is normally what... £45 if paid in the first 14 days? He could have paid anywhere between £6 and £18 i guess for his parking tickets. Would almost have been better off to just not bother with a ticket, and wait for the fine.