It is indeed possible that selling off Cobham, an aerospace company, isn’t in the national interest. But if that’s so then selling off Cobham, an aerospace company, isn’t in the national interest:
The £4 billion takeover of Cobham by an American private equity firm faces further opposition after the family that founded the British aerospace and defence company called on the government to step in. Lady (Nadine) Cobham, whose late husband Sir Michael led the company, has written to Ben Wallace, the defence secretary, and Andrea Leadsom, the business secretary, to raise concerns that the takeover by Advent is not in the “national interest”. Her family holds a stake of about 1.5 per cent in the FTSE 250 company.
Perhaps the family might have thought of the national interest before cashing in on 98.5% of the stock?