Of course being another 10 years away, there could be a significant % of the current 'local' Cambridge domiciled workforce that will have or are due to retire by that date, so where the post 2030 workforce live may not be so much of an issue.
I'm sure they've thought of all this anyway.
I'm guessing the area they have leased is the area adjacent to the north end of the runway, north of Merchant Lane?