Ok, well I don't know about cameras outside sussex, you may be ok.
Think its 24 days to get the letter, if you don't get one by then, you're ok and it's just one with no film in it
Where was the camera?
Was it a gatso or truvelo ?
Gatso gets you going away from the camera so gets the car rear end, truvelo gets you coming towards it.
If it was a gatso, not many have films in them, they just flash, it's too expensive for the police to have films in all of sussex camera so...