From personal experience, if you put up a fence more than one metre at the front of the house where you have a driveway then they will most certainly ask you to either reduce it to no more than one metre or remove it completely. I had the front garden done a few years back and the fence was around 6ft either side. I didn't forsee any issues with this as the hedges I had removed to mske way for said fencing were over 8ft tall. Antway to cut a rather long, boring, and frstrating story shorter I received a letter from Southwark soon after instrcting me to remove the fences. Had I known what the rules are I would have complied as in the end, I wasted more money reducing them. Oh yes and at the same time focused my frustration on the neighbour who 'created' the situation....