The first thing (and most difficult) thing to do when you get a summons for any kind of violation is to pay it immediately. This will stop any increases in fines which will accrue like a cancer. In all probability, at the end of the day, you won’t fight the summons.
And if you do, you will likely lose.
It is not worth the many times the ticket original amount that you will end up paying (not to mention the tire boot and towing of your car).
You can always fight your case after you pay and get a refund in the unlikelihood that you win.