Metropolitan Line: Severe delays between Harrow-on-the-Hill and Amersham/Chesham/Watford due to an earlier signal failure at Harrow-on-the-Hill. The next soundbound departure from Amersham will be at 16:22. The next soundbound departure from Chesham will be at 16:26. Tickets will be accepted on Chiltern Railways services. GOOD SERVICE on the rest of the line.