Piccadilly Line: Severe delays between Acton Town and Heathrow Airport due to an earlier signal failure at Boston Manor. Tickets are being accepted on London Buses and the Elizabeth line. No service between Rayners Lane and Uxbridge due a shortage of Piccadilly line trains while we fix damage caused by leaf fall. Please use the Metropolitan line to complete your journey. For stations between Acton Town and Rayners Lane, change at Acton Town. MINOR DELAYS on the rest of the line.