Motorway M1 end of lane / red light cameras

[Man in the middle]

You don't have anything to appeal as you have not been convicted of anything. This is not like a parking ticket where you appeal to an adjudicator. This is a criminal offence and you may be offered either a course or a fixed penalty (£100 and three points) at the discretion of the police. If you are and you decline or ignore the offer you will be prosecuted. There the police will have to prove you committed the offence (which should not be too difficult for them) and if you are convicted you will be sentenced under the normal sentencing guidelines.

 

As above, if you have received a "request for driver's details" you must respond naming yourself within the 28 days allowed. If you fail to do so you will face prosecution for that offence. A conviction carries six points, a hefty fine and an endorsement code which will see your insurance premiums rocket (probably double in the first year) for upt to five years.

[Man in the middle]

1 hour ago, niknoo8 said:

i have received the n172  (or the letter in the post) but not replied yet. I have a few weeks to reply .

You won't have more than four weeks but if you know who was driving (and it seems you do) there is no point in delaying your reply.

 

That's all you are being asked to do at the moment and, as I mentioned above, failing to do so is a more serious offence (certainly as far as the penalty goes) than the one you are suspected of committing. If you have any issues with the signature offence itself these can still be raised after you have responded to the request.