There is a very "light" noise like a small plastic fan coming from the glove box area when the heat is on.

Its probably a fan of some sort. Does anyone have any experience or ideas on where to start?
Thanks

 

Most likely debris in your blower motor. Not terribly difficult to remove and clean out. Rave gives a pretty simple to follow walk-through. Several years ago mine started squeaking only when braking (at first). Since then, I have pulled the blower motor and oiled the bearings a few times as I am too cheap to buy a new one.

 

https://landroverforums.com/forum/di...r-motor-51337/

 

Thanks

 

Here is a great set of instructions with pics:

Disco 2 chirpy blower motor fix - Australian Land Rover Owners