Under the freedom of information act 2000, I request all frequencies used by the Network Management Control Centre, and all frequencies used by iBus service control centres.

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TfL Ref: 1314-1920

Thank you for your request received by Transport for London (TfL) on 1 August 2019 asking for information about our iBus and Network Management Control Centre (NMCC) Radio Frequencies.

Your request has been considered in accordance with the requirements of the Freedom of Information (FOI) Act and TfL’s information access policy.  
I can confirm TfL does hold the information you require. 

However, in accordance with the FOI Act, we are not obliged to supply any of the information as it is subject to a statutory exemption to the right 
of access to information under section 38 (Health & Safety).  For safety and security reasons we cannot disclose the exact frequencies used by the 
London’s bus network or the NMCC. 

In this instance the exemption has been applied as disclosure of the information you have requested would be likely to adversely affect bus and network
operations or responses to incidents and consequently the safety and security of TfL employees and members of the general public.  Any third party with the appropriate equipment and knowledge of the requested information could listen in or even intercept communication between buses / tube trains and emergency responders/control. 

Although we in no way suggest that you would use this information for anything other than your own personal interests, disclosure of this 
document under the FOI Act would be regarded as a disclosure to ‘the public at large’. This information could potentially be obtained and 
utilised by individuals who may wish to use this detailed level of information to cause disruption or harm to the London’s transport network. 

The use of this exemption is subject to an assessment of the public interest in relation to the disclosure of the information concerned. TfL 
recognises the need for openness and transparency by public authorities, but in this instance the public interest in applying the exemption, in 
order to minimise risks to operational resilience, safe operation of the transport network, the welfare of staff and members of the general public, 
outweighs the public interest in disclosure. 

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

Yours sincerely

Sara Thomas

FOI Case Management Team

General Counsel

Transport for London

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