The headline result is that Cambridge’s estimated economic centre has not shifted out to a suburban campus. It remains in the inner city, but it has moved roughly 250–300 metres south/south-east from the mid-1990s position, pulled by the Cambridge Station/CB1 corridor and especially the Biomedical Campus. On the map, this places the centre broadly around the Parker’s Piece / Mill Road / station-facing side of the city, depending on year.
That southward pull is consistent with the evidence that life-science concentrations are mainly south of the city, while other knowledge-intensive concentrations are in the city and northern fringes. Cambridge Ahead also says the Biomedical Campus has grown from about 12,000 to 24,000 total jobs over the last decade and is currently Cambridge’s largest employment site when corporate and non-corporate employment are counted.
For the next 20 years, the central projection shows a modest east/south-east drift rather than a dramatic relocation. The Biomedical Campus is expected to accommodate 27,000 jobs by 2031, while North East Cambridge also pulls the centre north-east as Science Park / Innovation Park / Cambridge North growth continues. The wider Greater Cambridge employment evidence update projects central-scenario employment growth from 227,000 jobs in 2024 to 300,200 by 2045, which I used as a check on the overall growth path.