The government risks missing a “significant growth opportunity” by its failure to fully commit to the proposed Oxford-Cambridge growth Arc, according to the government’s own infrastructure advisor.

The National Infrastructure Commission’s annual progress review said that achieving the identified potential in the growth “arc” between Oxford and Cambridge would require a doubling in the rate of housebuilding in the area above historic levels, but that this was being held back by a lack of certainty around key infrastructure investments.

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