A new study by the Centre for Cities group claim the capital's housing situation could be helped by building on green belt land, and brownfield sites.
The group claim that if every brownfield site was developed to it's full capacity, nearly 400,000 homes could be built and developing just over 2 per cent of green belt land could provide a further 430,000 houses.
Ben Harrison, from Centre for Cities and Paul Miner from the Campaign to Protect Rural England, who oppose building on the green belt, debate the issue.
With the GLA estimating Britain needs 50,000 new houses a year for the next 10 years, the two debate whether the building can be justified and if it's a necessity. The two also discuss the Government's help to buy scheme and whether this can help compensate for the national shortfall in affordable housing or whether the only solution is more homes built on green belt land and brownfield sites.