We have a holiday home, and when we last went there we were shocked to see that our neighbour had inserted two central heating flues through the boundary wall so that they now stick out into our driveway. Are we entitled to remove these ourselves, or can we compel him to move them?
They certainly shouldn’t be there, and in legal terms constitute a “trespass” on to your land. I don’t recommend you tamper with the boiler flues yourself because you could end up gassing your neighbours, but you should ask them to have the flues removed and, if it’s your wall, to repair the damage. Follow up with a solicitor’s letter if necessary.