Metropolitan Line: No service between Harrow-on-the-Hill and Moor Park northbound while we fix a points failure at Moor Park. Trains will not be calling at North Harrow, Pinner, Northwood Hills and Northwood northbound. Southbound services from Amersham/Chesham will be calling at Croxley and Watford. Northbound Amersham and Chesham services will be running fast from Harrow-on-the-Hill. SEVERE DELAYS on the rest of the line.Tickets will be accepted on London Buses and London Overground services via any reasonable route.