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Welcome to the Marine Case Management System

The Marine Case Management System is provided by the Marine Management Organisation. We licence, regulate and plan marine activities in the seas around England and Wales so that they're carried out in a sustainable way. MMO is an executive non-departmental public body sponsored by the Department for Environment, Food & Rural Affairs, Department of Energy and Climate Change, Department for Transport, and Department for Communities and Local Government.

Services available to the public

You don't need to register or log in to use these services.

  • Use the interactive assistance tool to find out:
    • Whether your proposed activity requires a marine licence
    • Whether your proposal meets self-service marine licence criteria
  • Search the marine licence public register to:
    • Make a representation on an application open for public consultation
    • Review and download applications and licences
    • Review and download licence notifications, disposal returns and monitoring reports
    • Review and download compliance information
  • Submit an enquiry to the MMO

Services available to registered users

You can register an account to use these services.

For help when using MCMS, please use this guide.

For information on marine planning please use the MMO's Marine Information System and interactive map for England.

Contact MMO

Licence appeals

If you would like to make an appeal against a licence, call 0300 123 1032.

Licensing queries

Enquiries about an ongoing application should be submitted through the Marine Case Management System.
If you require assistance on making an application, call 0191 376 2791. This service is available from 9am to 4.30pm from Monday to Thursday and 9am to 4.00pm on Fridays, excluding public holidays. Please note, you may be requested to submit detailed queries through the Marine Case Management System.

Technical support

If you have technical issues registering for MCMS or using the system, call 0191 376 2660. This service is available from 8.30am to 5pm from Monday to Friday, excluding public holidays.

Log in


To use the Marine Case Management System, you need to register for an account