The Defence Modelling and Simulation Coherence (DMaSC) Technical Authority is responsible for the configuration management of UK enumerations to support modelling and simulation on behalf of the MOD.
The policy for UK enumerations for distributed simulation is available at the DMaSC web site here
To make a request for a new enumeration, submit an enquiry here.
The current status of the UK enumeration requests is available here.
The current set of approved UK enumerations is available here.