Buildersmate. OK I'll come clean. We were in the same position as Lomax. Our local authority passed similar plans in respect of our neighbour's proposed extension, despite our objections. We took the case to the Local Government Ombudsman on the grounds that the LA had not followed their own guidelines. The Ombudsman, though sympathetic, ruled that the LA had acted properly. So I researched right to light with the help of my son and eventually the neighbour backed down and the extension was never built.
OK, going the LA route may well prove the right course. I hope it does for Zlomax's sake. But, if our experience is anything to go by, the LA cannot necessarily be relied upon. There's no harm in making enquiries about right to light as a back up. I can tell you that we had 5 years of hell while all this was going and goodness knows what effect it would have had if the extension had been built.