SEC Version 5.21 Designated

22 August 2018

SEC v5.21 came into effect on 22nd August 2018 to deliver approved Modification Proposal SECMP0044 ‘User Security Assessment of a Shared Resource’. The following parts of the SEC have been amended by this modification:


  • Section A ‘Definitions and Interpretation’
  • Section G ‘Security’


You can download a zip folder containing SEC v5.21 here, or download the individual sections of the SEC from the SEC and Guidance Documents page of our website. You can find a copy of the redlined changes here.


If you have any questions or would like to discuss the changes to the SEC further, please contact us on 020 7090 7755 or email