Need help - What is this????

I have this yellow switch on my dashboard, and i am not sure what its for, could be fog light, but as i don't have fog light fitted, unsure.

Apologies if a stupid question, been a bit of an oversight:

You could just drop the trim panel underneath to see where the wires go, someone has fitted something maybe to switch on a fake alarm flashing warning light or perhaps had trouble with the washer switch so bypassed the stalk ?

Is it an ejector seat

Just kidding. The only way to be sure would be to follow the wires as said above.

Could it be some sort of immobiliser or alarm feature?

yeah nothing standard thats for sure, you'll have to trace the wires