The MOE window does not have to accessed from the road side. It only
needs to be accessible from a flat area (e.g. a path) where a ladder
can be used safely, and also where the ladder can be carried to. In my
case this is at the rear of the property and would mean carrying it
through a narrow shared passageway, but building control said that the
fire service would proabley go over the fence (or though it!) from the
other side of my property where their is an adjacent driveway. You
can't use an exit which alights onto say a flat roof area etc.