TfL Ref: FOI-2844-1718 

Thank you for your email received by us on 09 January 2018 which you clarified on 05 February 2018 asking for information about Metropolitan Line. Please accept my apologies for the delay in responding to you.

Your request has been considered in accordance with the requirements of the Freedom of Information Act and our information access policy. I can confirm that we hold the information you require. You asked:

“For each month in 2017 how many Metropolitan Line trains took longer to complete their route than advertised on the TFL website, and how many trains were terminated early, taken out of service or redirected due to delays, signal failures, congestion etc.
The TFL website and customer service team do not seem to record a delay to the service unless the entire line is disrupted - I am not asking you for that information, I want to know about individual trains arriving at their destination later than advertised on the TFL website. ”

There were 1.38bn journeys made on the London Underground in 2016/17. In 2016 we cut delays by nearly 38 per cent since 2011 as part of a programme to deliver improvement which included:
• The sustained investment in modernisation of Tube signalling, track and trains.
• New techniques to predict when maintenance on the lines is required to prevent unexpected equipment failure and delays to customers.
• Working with the British Transport Police to respond to incidents more quickly by getting engineers to incidents under 'blue light' conditions.
• Having engineering and operations staff in one control centre to speed up incident recovery times.
Please find attached the information requested.

The attached data tables list by location and month the number of delays at each location on the line.
Out of a total of 4,152,162 records 991,347 suffered a delayed departure of 1 or more minutes.

We have banded the delays as follows:

1 to 5 minute delays
6 to 10 minute delays
11 to 15 minute delays
16 to 20 minute delays
Delays greater than 20 minutes

Please note that the data does not represent individual trains. For example a train delayed departing Finchley Road, could also be listed as departing late from the next station and all the stations on its’ route. Another example could be a signal failure causing a number of trains to be delayed. Without a specific location being provided we have had to provide the data in this form.

If this is not the information you are looking for, or if you are unable to access it for any reason, please do not hesitate to contact me.

Please see the attached information sheet for details of your right to appeal as well as information on copyright and what to do if you would like to re-use any of the information we have disclosed.

Yours sincerely

Paulina Tuffour
FOI Case Officer

FOI Case Management Team
General Counsel
Transport for London

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