Dear Sir/Madam, I am writing to make a request for information under the Freedom of Information Act 2000. If this request is too wide or unclear, I would be grateful if you could contact me as I understand that under the Act, you are required to advise and assist requesters. If any of this information is already in the public domain, please can you direct me to it, with page references and URLs if necessary. I understand that you are required to respond to my request within the 20 working days after you receive this letter. Answers will be anonymised upon receipt. 1. What percentage of your software applications are developed in-house vs. supplied by third parties (commercial software and open source components)? o Less than 10 percent o More than 10 percent, but less than 50 percent o More than 50 percent 2. How much of the technology within your network is manufactured in a foreign country? o Less than 10 percent o More than 10 percent, but less than 50 percent o More than 50 percent o 100 percent 3. What country manufactures most of the technology within your network? _______________________________________________

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TfL Ref 2128-2021

Thank you for your request received by Transport for London (TfL) on 21 January 2021 asking for information about our IT suppliers.

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. Your questions and our replies are as follows:

What percentage of your software applications are developed in-house vs. supplied by third parties (commercial software and open source components)?

• More than 50 percent

How much of the technology within your network is manufactured in a foreign country?

• More than 10 percent, but less than 50 percent

      What country manufactures most of the technology within your network?  

• United States

If you are considering submitting a further FOI request please think carefully about whether the request is essential at this current time, as answering FOI requests will require the use of limited resources and the attention of staff who could be supporting other essential activity. Where requests are made, please note that our response time may be impacted by the current situation.

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

Sara Thomas

FOI Case Management Team

General Counsel

Transport for London

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