One in three trains will not reach the most northern part of a tube line as part of the new timetable, an MP has said.

Theresa Villiers, MP for Chipping Barnet, has criticised the new Northern line timetable for fear it will lead to a reduced service for her constituents.

She believes that one in three trains which would have reached High Barnet will terminate at Finchley Central and turn back in order to meet the needs of the higher frequency service in central and south London.

A TfL spokesperson has disputed Ms Villiers claim, saying it will be one fewer train in total during the evening peak.

Ms Villiers said: "First the Mayor cancelled new trains for the Northern Line. Now he is cutting services.”

"This is further evidence that the Mayor doesn’t care about Barnet and is putting the interests of inner London ahead of the suburbs, just like the last time Labour were in charge at City Hall.”

"I oppose these changes which will damage services used by my constituents. There was no public consultation about this timetable change.

"It was announced by TfL as a fait accompli and not one of my constituents was given the chance to comment on it. This is unfair and I am appealing to the Mayor to restore the services lost to my constituents."

This comes on the same day as the Mayor announced the new timetable, which he said would mean 24 trains per hour would be on the line throughout the evening peak (5-7pm) and 30 trains from Kennington to Morden.

The TfL spokesman said: “The new timetable on the Northern line, which is our busiest line, will provide more frequent trains for hundreds of thousands of customers each day.

"The busy evening peak period has been doubled, meaning quicker and more comfortable journeys. 
“To do this, there will be one fewer train in total in the evening peak hours between Finchley Central and High Barnet - 31 instead of 32.”