Most Tube station ticket machines are only accepting bank cards. You can top up using your contactless and Oyster account, the TfL Oyster and contactless app or an Oyster ticket stop. Ticket machines at all London Overground and DLR stations are still accepting cash.
District Line: A 10 minute service is operating Earl's Court to Ealing Broadway / Richmond / Edgware Road. A 5 minute service is operating on the rest of the line due to operational restrictions.