OP you have shared the letter but not the pictures, so we'll have to take your word for it.
As pointed out already the offence is complete. However there is nothing to stop you calling the ticket office or attaching a letter with your driver nomination pointing out that you did in fact stop if the pictures show this. Do not be confrontational or demanding, just ask if based on this they would kindly consider dropping the offence.
Level of success is not high, but if you don't ask you don't get. Just don't make it look like you are challenging the evidence or give them the impression that you would reject all offers and like to take the matter to court.
And I would like to wake up next to Alyson Hannigan. Which also isn't going to be happening.
Got to love a cheeky ginger. The same applies to Karen Gillan & Rose Leslie...