I reported a ticket officer for this last year...( assuming you WERE there for under an hour of course ) i was parked in a pay car park and walked down the road to pay a cheque in the bank.... as im walking down the street ( slowly i wasnt in a hurry ) a car parks in a marked space where its the usual 1 hour max stay and no return within the hour etc etc... no pay machines as its a free parking section for some shops. The guy parks up and walks off over the road.
I goto the bank, pay my cheque in and come out and back up the road... this is about 5 minutes later. I see a parking warden ( a council one ) writing out a parking ticket and he slaps it on the car i just saw parking there 5 minutes before. I walked to where he was and asked him why the guy had got a ticket, to which he replies "hes been here over an hour mate...". Of course i said my piece and asked him why i had seen the guy park there only 5 minutes before. The cocky warden says.... "yeah so what, like anyone is gonna care anyway. "
I ask for his badge number, i could see it anyway, and told him i was reporting him... at the same time the guy returns and a girl i know comes out of the shop over the road where she works and she backs up my story. The warden wasnt having any of it and said "ticket stands.... no one will believe you anyway, everyone tries that old story!" and walks off laughing.
I did report him but god knows what if anything happened.
To sum up.... wardens can and WILL give out tickets they know they shouldnt.. and dont give a rats behind about it.