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. Customers travelling to Watford and Croxley should board an Amersham/Chesham service and change at Rickmansworth for southbound services. SEVERE DELAYS on the rest of the line.Tickets will be accepted on London Buses and London Overground services via any reasonable route.