TfL Ref: 0109-1718
Thank you for your request received by Transport for London (TfL) on 22 March 2017 asking for information about speed cameras on the M4.
Your request has been considered in accordance with the requirements of the Freedom of Information (FOI) Act and our information access policy.
Unfortunately we do not hold the information you have requested as the Highways Agency manages the national motorway network, including the M4. You may want to access their website for further information: https://www.gov.uk/government/organisations/highways-england
For details of the roads managed by TfL please see: https://tfl.gov.uk/corporate/about-tfl/what-we-do/roads
Please see the attached information sheet for details of your right to appeal.
FOI Case Management Team
Transport for London