I've just realised, having annoyed the neighbours!, thatmy car does have an alarm after all, I did the test wrong!!
So here's how to test properly. Lock you car with the remote. Wait a few seconds until red light on the door trim flashes.
Unlock the drivers door using your key. Open the door and leave it open. The interior lights should come on but the red light will keep flashing!!
Wait 15 seconds, as long as you don't put the key in the ignition the alarm will go off.
Be ready to jump, it's bloody loud when your not expecting it!!
Just to reiterate, my car does NOT have the button on the pillar. That means my car does have an alarm but doesn't have the 'monitoring system and anti-tow alarm'.