One of the key aspects of urban planning mechanisms is to provide flexible planning regimes in order to make them compatible with the metropolis and region's DNA, and enable them to adapt to the new realities.

Any new plan considered must be describable, simple and fully flexible to be able to face any possible changes that we still do not know about.
London's plan comprises three essential elements: preserve the Metropolitan Green Belt to limit sprawl and restore nature, provide mixed uses in new centrality areas as places for opportunity and development, and increase density allowing more buildability, especially affordable housing, in the areas with good access to public transport.
The freedom to adapt does not mean ignoring the vision of the city, but allowing the flexibility to make it possible..