Yup saw that (as a Londoner) would love to see the revised approach.
Personally I always thought the very first idea (short runway north) was the best plan - but what do I know!
I have an even better set of proposals to release capacity @ LHR for intercontinental expansion, that doesn't require a single bean of public capital spending........
1. Tomorrow morning UK Transport Minister Chris Grayling proposes a new regulation @ LHR that all passenger flights within a 165 mile radius of LHR be banned from a date tbc in 2019; (officially excluding all MAN flights). Passengers will travel from LHR (1 stop @ MK) to MAN by train on a new hourly/ (2-hourly round-the-clock) 24-hour service. [A fleet of practically new 275-seat Class 707 trains will become available in 2019 as First-MTR's fleet of new trains arrive.] This move saves BA around 10 (?) LHR-MAN slots per day/ 70 fpw; at pretty much zero cost. I'd even offer IAG a 'free' shareholding in the rail franchise; (London Midland); as compensation. With 20 trains per day, this service would offer nearly 4 million LHR-MAN seats per year; plenty for all airlines @ LHR, at pretty much zero net capex..
2. To facilitate the above, you would need to electrify the short section of track between Acton and Willesden in west London; (1.5 miles); at a cost outlay of about £10M, which I would negotiate into future franchise considerations; (the new LM franchise operator is due to be announced later this year).
3. On the 'opposite' hourly rail slot to the MAN service, I would launch a similar rail service from LHR to MK-Coventry-BHX-Birmingham-Dudley-Wolverhampton-LPL-Liverpool, offering 4 million new seats a year to BHX, the West Midlands conurbation and Liverpool; and easing horrible congestion on the M40/M25 motorways.
4. Effective 2020; (or as soon as the new rail station @ LBA is built); that 165 mile radius would be extended to 175 miles, converting LHR-LBA services to rail and freeing up another 20 (?) slots p/week.
5. Mr.Grayling talks to his colleagues in Brussels and Paris to look to enhance HS1/HS2 plans to serve the LHR-BRU and LHR-CDG markets by rail by 2025, potentially saving maybe 25 daily BA/AF/SN departure slots/ 175 ish fpw @ LHR. Major cost here would be a new HS1&2 rail station and connecting spur @ £3bn ish under T3/5.
6. Mr.Grayling immediately amends HS2 plans, to include direct non-stop rail services from LHR to NCL/EDI and GLA saving dozens more LHR slots from 2033 ish, as he slowly extends the radius of the LHR flight ban to cover EDI/GLA/CDG/BRU.
There; just saved the UK tax payers £16+ billion, and released 70-80 daily flight departure slots for re-deployment, by using redundant trains that will have no use by 2019
When you could look at using existing rail plans to release capacities @ LHR; someone please remind me why a 3rd runway was necessary in the first place ?