Thanks guys, According to my owners manual which is applicable to my 2009 freelander 2. Pressing the lock button once will achieve partial alarm, ie when your travelling on a ferry and you need to keep a pet in the car. (There example not mine.) Otherwise all alarms on.
Twice will set full alarm. So that being the case and im going to test it out later, Im going to sit in it and wave my arms about like a madman, then its not the volumetric alarm thats going off it therefore must be the perimetric.
Just leaves me with bonnet sensor, tailgate sensor, or any door sensor. Do they still have traditional tilt sensors, I imagine they've all gone electronic but thought Id ask.
I did end yesterday by locking it on the door key (passenger door as the drivers door doesnt have one!) and we had no more probs but the wind had died down quite a bit by then. I understand that locking by this method excludes the volumetric interior but Im not certain. Ive read so much on google etc Im getting confuzzled. Not difficult for me though. Anyway, thanks again for the replies, I will check the vents, make sure they are closed although if the volumetric isnt set then I guess they wont be an issue.
Anyway, once again, thanks for the time your taking to respond.