It's not been mentioned here, but Heathrow (HAL) has been having a torrid time of it.
There's been a reduced service to Terminal 4 for the Elizabeth line since Tuesday, but for much of yesterday Terminals 2/3 were closed due to issues reportedly with sewage and right now Terminal 5 is closed due to some sort of water ingress issue. There's been an ongoing track circuit failure for days now too.
It's not entirely clear these are all related to the hot weather, but the timing is oddly convenient.
Heathrow Express have actually said
very little other than "Due to an incident outside of our control..."
Due to a significant incident outside of our control, there are currently no Heathrow Express services running. We are actively working to resolve the issue as quickly as possible. Current service information can be found here:
https://heathrowexpress.com/service-updates
PS: I also love
how this page seemingly deliberately has no reference to the Elizabeth line as an option at all, calling the Piccadilly line the "next quickest"!
If your Heathrow Express train is cancelled on the day and you’re already travelling, you can:
- Get a later train: You may be able to wait for the next running Heathrow Express train if you have time before you need to get to the airport or back into central London. Our Heathrow Express trains run every 15 minutes.
- Find an alternative mode of transport: If you're travelling from Paddington to Heathrow, or the other way, your next quickest option is to take the Piccadilly Line on the London Underground.