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.
Piccadilly Line: A 10 minute service is operating between Acton Town and Uxbridge due to an earlier faulty train. A 5 minute service is operating on the rest of the line due to operational restrictions.
Metropolitan Line: A 10 minute service is operating between Harrow on the Hill and Uxbridge. A 5 minute service is operating between Harrow on the Hill and Aldgate. A 15 minute service is operating between Harrow on the Hill and Watford. A 30 minute service is operating to Amersham / Chesham due to operational restrictions.