The problem is affecting journeys for passengers travelling from Reading and Heathrow Airport.
⚠️Due to damage to overhead wires, all lines between Slough and Paddington are blocked.
⚠️Train services running to or from these stations will be cancelled or delayed by up to 90 minutes.
⚠️Disruption is expected until 10:00
⚠️Check your journey at https://t.co/U53eoQQs6C
— GWR (@GWRHelp) September 19, 2022
Services run by GWR, Heathrow Express and the Elizabeth line are disrupted.
The lines between Reading and Newbury are also closed due to a person being hit by a train.
This is causing GWR trains to be diverted, delaying journeys to the capital.
The issues come during one of the UK’s biggest transport operations as mourners descend on London and Windsor.