The home counties are stuffed to the gills with housing already. The right answer is better high-speed commuting services (not HS2 though; that route doesn't help anyone).

We need fast train services to places in the UK where the population is quite low. Then incentives to get business to set up shop there. Once the jobs are there, the people will follow. There is 20 times the amount of people in London, than there is in the northern counties (per sq mile) - we need to stop cramming everyone into the South East.

Agree entirely, as do many sensible people, yet what is happening is the exact reverse. The North of England, for example, would have benefited greatly from a fast rail service but it's a can that's been kicked down the road for the past couple of decades.

Building enough is impossible with enough speculation. In Vancouver, the city would plan for 200 new condo units and see 100+ of those units get snapped up by real estate speculators and left empty.