Oxfordshire commuters will benefit from London journey times falling by nearly a third, a rail company has announced.
Chiltern Railways' fastest journey times from Banbury will be reduced to 51 minutes, or 46 from Bicester.
The £250m upgrade on the Birmingham to London Marylebone line will enable trains to run at 100mph (161kph) for virtually the full length of the line.
Spokesman Thomas Ableman said: "The daily commute is about to get a lot easier."
The new timetable, which comes into operation in May, brings Banbury to within an hour of travel time of London for the first time.