For many marine developments, one of the biggest challenges is navigating the divide between maritime and onshore planning regimes.

Projects rarely exist entirely in one space. A single development may involve marine works requiring MMO consent, alongside onshore infrastructure subject to local planning authority approval.

Managing these parallel systems can be complex, particularly where requirements overlap or conflict.

Understanding the differences

While both regimes aim to regulate development, they operate in different ways.

Marine planning is generally more environmentally focused, with a strong emphasis on habitats, ecosystems and long-term sustainability. Onshore planning, by contrast, often brings in a broader range of considerations, including local policy, community impact and economic development.

Understanding these differences is key to shaping a coherent application strategy.

Aligning applications and timelines

One of the key risks in dual-regime projects is misalignment.

Differences in:

• Application requirements
• Consultation processes
• Determination timelines

can lead to delays if not carefully managed.

Taking a coordinated approach from the outset can help ensure that applications support, rather than undermine, each other.

Stakeholder management

Projects that span both marine and onshore environments often attract a wider range of stakeholders.

This can include regulators, local authorities, environmental bodies and community groups. Managing these relationships effectively is essential, particularly where concerns overlap across both regimes.

A joined-up strategy

Successful projects are those that treat maritime and onshore planning as part of a single, integrated process.

This means aligning technical assessments, coordinating submissions and ensuring consistency in messaging throughout.

How we can help

Our Planning & Infrastructure team works closely with clients on complex projects involving both marine and onshore planning considerations.

If you are progressing a development that crosses regulatory boundaries, we can help you take a coordinated approach and avoid unnecessary delay or duplication.