Whilst I am not particularly a supporter of Boris Island I do think one has to wonder if LHR really knows where it's going. Trying to squeeze more into a tiny plot has little future, just to build one R/w is going to be mega disruptive Circa 1000 homes distroyed and hellish transport problems with M25 put into a tunnel widened to 10 lanes whilst it remains the major road artery around London. The disruption will be hellish, not just to London but the airport itself. Then there is another terminal with links. By the time it's finished in say 10yrs it will be swamped with traffic
So what then?
This is where Boris has vision, it may be nice for all the vested interests to just think LHR but sensibly we do have to move on