For more information about Heathrow and flight information there, please see Heathrow Airport Flight Status.The independent website, Flightstats, is a good starting point for flight information. As the critical time for departure or arrival draws near, it is a good idea to look at the websites for every airport involved in the journey, and for the airlines.
The remainder of this blog pertains to December 24, 2006.
Heathrow Airport's website is a quick way to link to some of the major airports serving England, Scotland and Wales: Heathrow, Gatwick, Stansted, Southampton, Glasgow, Edinburgh and Aberdeen. Clicking on the links for the various Heathrow terminals shows you the current state of the landing and departing flights.
The commentary is that things are returning to normal. (It's now 5:30 p.m. on December 24, UK time, or Greenwich Mean Time if you prefer).
Good luck if you are waiting for a flight, or meeting an arriving flight.