Have we forgotten there's an election in a couple of weeks?
No labour politician is going to risk ordering the reopening of airspace if it might mean losing votes.
The likes of Lord Mandelson and others have already been on television with ready sound bites like 'Safety is our primary consideration' which are obviously comforting to the majority of voters who dont really understand the concept of risk management when applied to aviation wich is still perceived in many eyes as 'dangerous' even though it is statistically by far the safest form of transport.
Maybe we will have to wait till the end of the election before someone wil have the guts to make a command decision!