I heard the interview this morning on Radio 4.
They are looking for sponsorship of an immediate £150K and £50K per month until the Airshow season starts. The presumption then is that once flying and on view to the public the money will come rolling in and the CEO sited 2 cases - £6M over the life of the project all from public donation and IIRC £1.5M over a 12 or was it 18 month period. It sounded to me as if he felt the public would come to the rescue.
Mr Naughtie did not ask if there was a Plan B and one was not volunteered. Judging by what I read on this thread the future looks more ugley that rosey.
LB