Kitchen extractor- plus a second vent - is it a requirement?

[Ben B]

I've been redoing our kitchen and on removing one of the cupboards I found a ventilation pipe now gaping in the middle of patch of wall (Where I'm no longer having any cupboards).

I could fit a vent over it (at the moment it's just a 100mm ventilation pipe full of cobwebs!) but if it's not a requirement I'd rather brick it over and plaster it.

Is this vent hole a building regs requirement due to the kitchen extractor a couple of feet away on one side? due to our oil-fired boiler a couple of feet away the other side? Or can I remove it?

Thanks

 

[Blagard]

Oil Fired boiler! - Could be related to that. I know I had to tell a builder to put a vent in once because he thought the boiler flue through the wall was a balanced flue. - It wasn't it was just an exhaust tube and so the room required a certain level of free air ventilation.