CDER Enforcement letter sent for PCN in England

A PCN contravention for driving in a bus lane was issued to Me. The contravention date was May 2023. A letter was sent in October 2024 from CDER issuing a letter of enforcement.

The amount is £115 for the fine and a CDER compliance fee of £75

This letter was sent to my mother in laws house which is where I was staying for a bit last year but I’ve lived somewhere else all this year. So I haven’t seen any communication until just now when my wife went to her mums house to get something.

I don’t see any other letters or emails From the council asking for payment or showing the CCTV contravention, only have this Bailiff letter which was issued October 24th giving me a deadline to pay 6th November.

Not sure what’s happened here but what are my steps out of this before paying anyone anything. I want to first ascertain what the contravention was and to see proof of it, then I guess I want to mention that I have not seen any correspondence by the council, obviously if I had seen it I would not have ignored it.

Thanks