BAA says that it is currently not accepting passengers at Heathrow Terminals 1 and 3, as they are currently "extremely congested".
The airport operator posted the following message on its website homepage at 1400:
"There are continuing freezing conditions at Heathrow and it is currently snowing. Terminals 1 and 3 are extremely congested and we are unable to accept any more passengers coming to these terminals. We are therefore asking passengers not to travel to Heathrow Terminals 1 and 3 until further notice. We will review this at 16.00."
British Airways has cancelled all short-haul flights at Heathrow for the rest of today, and passengers are advised not to travel to the airport before speaking to their airline.
Here are the relevant Twitter feeds for the most up to date advice:
- Heathrow: http://twitter.com/heathrowairport
- British Airways: http://twitter.com/british_airways