well the alarm has stopped going off but the hazards are flashing every time i lock & unlock the doors
The alarm box is still active
There are at least 4 types of alarm fitted over the years....
A combined siren, control box - opinion on this forum suggests this was fitted to early non-UK cars
A Scorpion alarm fitted to early UK ph1 cars
And two Meta alarms (M99 and M99T2) fitted to Ph2 & Ph3 cars
The control box for the meta alarms is situated in the void behind the radio - take off the carpet trim and you should find it - just disconnect it.
It is possible to get new alarm fobs for the meta alarms from Abacus Alarms - you will then have central locking - search this forum for web address
I'm not sure about the Scorpion alarm. I don't think you have the non-UK alarm because it will have been disconnected when you disconnected the siren.
If the alarm is a Meta M99T2 and you don't want to use it again, I would be interested in buying the siren