I am fighting Coventry city council for the same thing......I live in west of scotland.
Parking charge notice for a transit with my plates parked on double red lines...I wasnt even in the UK at the time of offence....
Asked them to send me a pic of the offence and they did, blue transit exactly same as mine, minus alloy wheels, sport kit and signwriting.....but with my Number plate
I have luckily a facebook work page with a pic of my van dated before the incident so they can clearly see its not my van in their pic......
Oh and i went to my local cop shop.......they were not interested, said the plates had prob been taken off it by now and i should contact coventry police....useless b@st@rds....
Still awaiting the outcome!!