Originally Posted by
fluffymitten
I'd be very surprised if the inter-terminal transfers weren't running, as the airport is operational. The Sofitel at T5 is practically in the terminal building (ok, a short walk) so there's no reason why you shouldn't be able to walk into T5 and use the free transfer train.
It's where we usually stay if overnighting at LHR and is a doddle to to the transfer usually. Was just a bit concerned given the info on TFL and heathrow express websites.
I did think it would be very strange for the trains not to be running between terminals with the airport operating but was unable to find any information specifically for Christmas day on the LHR website.