Revised growth in population figures – A need to plan, not least for housing

The revised statistics from the ONS pour more light on a subject that I have consistently been highlighting.
That is that the UK population is set to rise by 9m or 14% by 2037, that is in one generation, in 25 years.
This is a staggering figure,but I sense no desire to discuss how we plan for this.
On housing we are still stuck in a low level debate as to whether we can boost our total housebuilding much beyond 100k per year. If we say the average occupancy is 2.5 that would seem to point that we would need an additional 3.6m homes over the next 25 years or 144,000 per annum This takes no account of replacement of old stock, so you would probably double this. RIBA suggest we need 300,000 per annum.
Is it really feasible to continue to allocate a few thousand houses to Districts here and there, often bitterly fought by local politicians and residents? Should we not be thinking of building completely New Towns and Cities, on brownfield sites or even in dispersed parts of the UK. Should we not be thinking of high rise building?
Then there is the question of where the jobs are going to come from and here we see the relentless growth of London. So we are going to need to invest vast amounts in High speed rail ( yes HS2, and more ) to get these people to work.
This is only one issue, there will be a huge need for school places, for healthcare, never mind the implications of an ageing population.
I would suggest that we need a Royal Commission on the impact of this population growth. It is of such magnitude that we cannot leave it to politicians playing the 5yr political cycle.