The loss of electricity has plunged large swathes of the UK into chaos, including London and the South East, as well as the Midlands and the North West. In London, commuters faced darkness on the Victoria Line while traffic lights in Battersea lost power in scenes described as 'apocalyptic' by those affected. Train services in and out of London, including Thameslink, Southern and Gatwick Express are facing delays and cancellations. Passengers have also been left waiting on planes in Luton and Newcastle, with the former airport also affected by flooding this afternoon. After an investigation, the National Grid Electricity System Operator found that issues with two generators caused a loss of power across parts of the UK but the issue is now 'resolved'.