slightly off tangent but - most of us working in TC in the London ( surely the only real ) TMA are aware that the "donation" of airspace to the Mil in the North Sea will hasten the development of the eastern extension of B4, easing the hellhole of TC NW.
whatever those involved at the moment may think, there will be many a TC North valid atco who will be most grateful come the day that sector is not so life shortening.