immobiliser fitting certificate help

[mt fuji]

bizarrely and after many years my insurance company want to see the immobiliser fitting cert on this renewal ! , never had one with the car , its a gt alarm/immobiliser thatcham cat 1 ,anyone know somewhere i could go to get the system checked over and hopefully a new cert issued ? . cheers .

[Spare tyre]

Do you know how much you are saving by having the immobiliser certified

I had something similar once and it was not actually worth the bother