Can I get a dataset which contains every service of 2019 (or ytd) on everyline. Whether it was delayed, on time and if delayed or cancelled etc mentions if it's faulty train, signal failure, person ill etc. Line by line if possible with date and time stamps please. Thanks

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Our ref: FOI-2906-1920

Thank you for your request received by Transport for London (TfL) on 29 December 2019 asking for information about London Underground performance.

Your request has been considered in accordance with the requirements of the Freedom of Information Act and our Information Access Policy. You asked:

Underground performance data containing signal failure info and faulty trains

Can I get a dataset which contains every service of 2019 (or year to date) on every line. Whether it was delayed, on time and if delayed or cancelled etc mentions if it's faulty train, signal failure, person ill etc.

Line by line if possible with date and time stamps please.

Unfortunately, to provide the information you have requested would exceed the ‘appropriate limit’ of £450 set by the Freedom of Information (Appropriate Limit and Fees) Regulations 2004.

Under section 12 of the FOI Act, we are not obliged to comply with a request if we estimate that the cost of determining whether we hold the information, locating and retrieving it and extracting it from other information would exceed the appropriate limit. This is calculated at £25 per hour for every hour spent on the activities described.

We have estimated that it would take over 18 working hours to retrieve and compile the information you have requested.

In order to collate the information you have requested would be very time consuming. This is because there is no central record of these files and to find this detail would require looking at each and every timetable for each train that was in service on every underground line. This would take a considerable amount of time and resources, and would be exacerbated further by the time and resource required to collate the additional delay information you requested.

To help bring the cost of responding to your request within the £450 limit, you may wish to consider narrowing its scope so that we can more easily locate, retrieve and extract the information you are seeking, for example, by stating specific underground lines for which you require information.

If you want to refine your request or make a Freedom of Information Act request in future, please bear in mind that the Freedom of Information Act allows you to request recorded information held by Transport for London. You should identify the information that you want as clearly and concisely as you can.

Although your request can take the form of a question, rather than a request for specific documents, TfL does not have to answer your question if it would require the creation of new information or the provision of a judgement, explanation, advice or opinion that was not already recorded at the time of your request.

Please see the attached information sheet for details of your right to appeal.

Yours sincerely,

Melissa Nichols

FOI Case Officer

General Counsel

Transport for London

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