Recently my neighbour downstairs has been renovating their flat and put
up a new vent for their boiler. You may see the picture he

http://img252.imageshack.us/img252/3...oximitytm2.jpg

As you can see, the vent (white pipe) is quite close to my window which
opens downwards. When I open the kitchen window, I can smell unburnt
fuel in it, as well as see the vapour blow into my flat.

I have contacted my neighbour about the problem but he is unwilling to
accept it is a problem.

I then contacted Environmental Health of Camden council and they are
unwilling to assist, saying that this is a private dispute between two
owners of the property (I own the upstairs flat, they own the
downstairs flat). This is despite me telling them that life may be at
risk due to the carbon monoxide from the fumes.

I do not know who else to contact and desperately need some advice.