There is still a half hourly Elizabeth line service and the usual numerous freight trains but they can be easily accommodated on a two track railway.
At the moment trespassers at Southall are causing problems.......
Route(s) affected
Elizabeth line between Abbey Wood and Heathrow Terminal 4 / Reading, and also between Shenfield and Heathrow Terminal 5
Heathrow Express between London Paddington and Heathrow Terminal 5
Description
Emergency services dealing with an incident between London Paddington and Heathrow Terminals / Slough means lines are disrupted. As a result, trains running between these stations may be cancelled, delayed by up to 60 minutes, or revised.
Disruption is expected until 20:30.