Wednesday 27th December 2017:
An amended Saturday timetable will operate. Trains will call at Sudbury Hill Harrow. For most of the day, it is not possible for trains to call at Sudbury & Harrow Road stations - please use Piccadilly Line services to/from Sudbury Town instead.
Additionally, due to engineering works in the Paddington area, Chiltern Railways Marylebone/Oxford services will convey additional carriages in expectation of increased demand.
Amended timetable/s will be uploaded to this page once finalised.