No, I believe it was origionally the London airports plus Prestwick and perhaps a couple of others. Bournemouth was state owned but was relinquished upon the formation of BAA.
In the case of Yorkshire, there was a very good idea of building an airport in the Ferrybridge area, to coincide with the opening of the M62, it would have also been on the A1. Would have been the perfect solution for Yorkshire but such a project could never get off the ground without state intervention.