Only on reading the advice on money saving expert after I have paid I realise they are not enforcable and that I have should have binned it.
And..to make matters worse as I was ringing through my payment I noticed the fine was relating to one day last week (nothing was put on the car at the time - its all cctv pics - I didn't notice the maximum length of stay had changed from 90 to 50 mins, sneaky bastards) and I parked there one day this week for 90 mins again. Now worried I will receive another one.
I will bin if I get but am cross with myself for not checking legalities first. That's £40 down the drain. 