Now. If that will not happen, which is far more likely, do you expect any MET Office, NATS, CAA bodies will take any responsibility? For what they've done, they should be jailed and heavily penilized (on personal level, not only as organisation) for a gross misconduct.
Why should they?! They have done EVERYTHING right and by the book, as per manufacturers reccomendations, as per ICAO guidance, and observations have backed up forecasts. Gross misconduct? I think not. Safety before money - yes.
Should the airlines have done more for their passengers? Maybe. Should the government have done more for stranded passengers of all nationalities? Yup. NATS / CAA / Eurocontrol / Met agencies have done their jobs in the face of increasing pressure and hostility from those losing money.