Will Forest City destroy Suffolk farmland?

Given the central government is forcing the region to build 340k homes over the next 25 years, Forest City will actually reduce the amount of farmland that will be built on.

The default way Britain builds homes is by urban sprawl around existing villages and towns—smearing the construction and destruction across as many areas as possible, all so the developers don't need to build infrastructure.

Currently, sprawling developments typically take up 15 dwellings per hectare (dph). Because Forest City will be properly planned next to areas of employment, and also come with public transport including a tram network, Forest City homes can be built closer together (think the terraced streets of Cambridge, Bath and London). This way we use 3x less land per home. We've calculated that 340,000 'development as normal' homes over the next 25 years would consume at least 56k acres of greenfield land. Subtracting 13.5k acres of new woodland and the lake, Forest City would be using only 31.5k acres as built-on land. So because cities can fit vastly more people in a smaller footprint than village extensions ever could, Forest City would save the East of England around 21.5k acres of prime farmland.