Marine Management Organisation (MMO) introduces licence condition for I-VMS ahead of new legislation.

In a variation notice issued this week, MMO outlined a new licence condition coming into force on 12 May 2025, requiring the use of a type-approved I-VMS device on any English under-12m vessel undertaking a trip to sea. D&S IFCA is assisting the MMO to inform stakeholders about this news.
This early notice of the incoming licence condition is the next stage of MMO’s preparations to support English fishers ahead of statutory legislation, expected to be laid by government later this year.
This announcement follows the roll-out of I-VMS devices which saw over 80% of industry purchase and install an I-VMS device, with more than £1.57million in grant funding paid out to fishers. The main requirement of this licence condition is for fishers to have installed a functioning type-approved I-VMS device that shares positional data during a trip to sea.
Sean Douglas, MMO’s Head of Regulatory Assurance, told us: “Good data is essential for sensible decision-making to protect fishing for the future. We’ve worked closely with the new government, DEFRA and suppliers to move forward with I-VMS for the benefit of both fishers and fisheries management.
“This announcement should assure industry that I-VMS legislation is just around the corner. We urge those in the under-12m fleet who are actively fishing to make use of the coming weeks to ensure they have a device, switch it on and check things are working as they should.
Mike Cohen, Chief Exec of the National Federation of Fishermen’s Organisations (NFFO) said in support of I-VMS: “Today, many different people want to use the sea for many different purposes. Whether it is building a seaweed farm, installing wind turbines, declaring a conservation area, or something else. All of these things carry a risk that fishermen will get pushed out.
“We have to defend our access to the traditional grounds that our industry depends on. The best way to do that is with data that proves how important those areas are to us. Larger vessels in the national fleet have been able to do that for some time now, thanks to the VMS devices they carry. In every map of fishing effort in UK waters, however, there is always a stark gap where the inshore fleet works.
“I-VMS is the tool that we need to close that gap and defend the inshore fleet. With the data it provides, we can prove how important the inshore grounds are to fishing businesses and fishing communities. The better the coverage we have, the stronger our argument”.
A marine future with I-VMS
SeanDouglas, continued: “The data from I-VMS will, for the first time, provide a true understanding of what is happening across England’s marine environment. It will allow for smarter, evidence-based, decisions when it comes to marine developments, marine and fisheries management planning, regulatory displacement, niche and seasonal fisheries, as well as conservation and stock protection.
“The licence condition is very much an introductory stage to support industry ahead of the statutory instrument, due this year. During this time, we will take a measured approach to enforcement, working with industry and suppliers to address issues. However, we will take action where necessary to ensure a level playing field”.
“The sooner devices start transmitting data, the sooner fishers will become familiar with their device and tracking software, will know what is expected of them and can work with us – and their supplier – to resolve any unexpected issues.
“Importantly, I-VMS data will also help fishers track their own activity and better understand their fishing effort.”
Device suppliers provide either an app or web portal for fishers to track their own I-VMS data. These can be used to help fishers refine their efforts and business plans, as well as provide evidence to challenge developments or closed areas and use it as evidence in any compliance or conflict resolution.
MMO has advised that a small minority of the under-12m fleet is yet to take any action, foregoing MMO’s offer of grant funding during the earlier roll-out period. But the message is clear: If you’re an English under-12m fisher planning a trip to sea from 12 May 2025, you must get a device now.
More Information & Contacting the MMO
This news item and additional information about the Marine Management Organisation can be found by visiting Gov.Uk. If you have questions about the information set out in this news item, please contact the MMO.
The I-VMS hotline remains open for enquiries on 01900 508618, Monday to Friday (9am to 5pm) and emails can be sent to ivms@marinemanagement.org.uk. Updated guidance can be found online at: gov.uk/mmo/i-vms-england.