Many thanks to all who replied.
Have done some research of my own since posting and it would appear that you are all correct, the thing to do was NOT PAY THE CHARGE!
According to appealnow.com -
http://www.appealnow.com/private/ - I have a number of grounds on which to fight this but it would mean paying a solicitor.
On a Carer's wage that ain't gonna happen - just in case I get a judge who is in a bad mood that day.
In addition, they cannot (as they threaten on the ticket/charge/whatever) hand your details to a debt collection agency before a court has found you guilty!!!
Swines!!