Case Study

PlantSea

- Oct 07, 2025
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About the client

PlantSea is committed to sustainability and innovation, tackling the global issue of plastic pollution head-on.
Motivated by the harmful impact of microplastics on our oceans and ecosystems, they’ve developed a unique seaweed-based flexible film that dissolves naturally, with the ability to hold both liquids and dry goods. This solution offers a sustainable, biodegradable alternative to synthetic polymers like PVOH and PVA, commonly used in packaging.

About the claim

Leyton’s collaborative, well-rounded team made the entire process smooth and efficient, from technical and scientific input to financial guidance. Their transparency, responsiveness and attention to HMRC updates made sure that we were well-informed at every stage. It was a really positive end-to-end experience.

Impact of the claim

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Projects like this are really impactful for our cash flow. We’ll be investing the money directly right back into research and IP protection. This will help accelerate us even further towards achieving our mission, which is what it’s all about!

Alex Newnes CTO & Co-Founder

The benefit of working with Leyton

“We had claimed before, but as the years passed, our claims were getting a bit more complex. We saw a real benefit in using Leyton as they have the expertise and resource available to dedicate time to our claim.

All of our documentation was turned around really quickly and there was very little that I actually had to do in the end. It was made very clear to us what would and wouldn’t be in scope and the team also uncovered some areas that we could have claimed for in the past but hadn’t.”

“Ensuring that the right team were selected in the first place meant we were very well supported throughout the full process, with lots of check-ins and opportunities for frequent meetings. I can’t fault the pace and above all feeling like as a client, we really mattered.”

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