The people behind Ecousta
Our Story
Lumii did not begin as an acoustic brand. It began with a single brief.
In 2023, a major brand approached Julian Grindall to develop a lighting range using acoustic felt. It was a natural fit. Nearly 30 years earlier, Julian had pioneered acoustic screens and built a strong reputation in PET and acoustic solutions.
The lighting collection was created successfully and was originally intended to stand alone. Instead, it sparked something bigger.
What began as a lighting range quickly evolved. The material, its performance, and its design potential opened the door to a wider vision. Lumii expanded beyond lighting into acoustic solutions for walls, ceilings, screens, and integrated systems.
Our next chapter...
From May 2026, Lumii has become Ecousta. The same team. The same expertise. A name that reflects what we do.
Alongside the new name, there is a lot that is new too. We have been busy behind the scenes, building out new product ranges and bringing everything together in a new website we are really proud of.
We are based on a working farm in the heart of East Sussex. Our design studio, office, warehouse and production hall all operate side-by-side, giving us the freedom to prototype, test, refine and deliver with care.
This is the team that inspires us to keep raising the bar.
Meet The Team
Julian Grindall
Managing Director
Julian is our acoustic specialist and interior designer, with over 40 years of experience. Working directly with architects, fit-out companies and commercial clients.
Anna Dawson
Sales Director
With more than 15 years in the acoustics industry, Anna brings a global outlook, a creative mindset, and a strong understanding of how projects take shape.
George Shiell
Key Account Manager
George, with extensive high-end sales experience, supports Lumii’s business development, fueling remarkable growth through exceptional customer engagement and expert technical support.
Rogan Kelsey
Sales & Compliance Coordinator
For 20 years, Rogan has delivered high-performance acoustic solutions that bring balance to demanding environments. From studio design to pioneering acoustic systems for challenging spaces.
Chloe Bridge
Marketing Specialist
Chloe leads Lumii’s marketing, helping share our story and connect with the people we work with. With a background in digital content and a love of good storytelling, she enjoys bringing our products and ideas to life.
Ian Cull
Head of Design
Ian has over 20 years’ experience designing a wide range of products for residential and commercial interiors. He has a passion for sustainability and is responsible for Lumii’s own collection of products and custom design.
Tom Grindall
Production Director
In charge of the production process, Tom has 20 years experience in product development, acoustic solutions & manufacturing.
Stuart (Ginger) Shiell
Head of Logistics
Ensures a seamless supply chain, optimizes logistics for peak efficiency, and ensures smooth, on-time deliveries to keep customers satisfied and operations running flawlessly.
Sean Robertson
Tech & Product Development
Sean brings years of expertise in developing products and machinery parts, mastering factory stock management, streamlining operations, and driving innovation in our manufacturing techniques.
Barry Roberts
Production Assistant
Barry brings ten years’ manufacturing experience to Lumii. A calm problem-solver with a meticulous eye for detail, he lifts quality, efficiency, and morale—bringing positive energy across the production hall.
Matt Kelsey
Production Assistant
Matt combines creativity and precision with a curious, can-do spirit. A guitarist and self-proclaimed “gun for hire,” he’s always ready to support the team and take on new challenges.
Kelvin Bromley
Commercial Consultant
With 40 years of experience, Kelvin drives revenue growth, builds strategic partnerships, and leads sales and marketing to maximize Lumii’s commercial success.
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Enzo
Head of Security
Don’t let the size fool you – Enzo runs a tight ship. With ears sharper than the office coffee and a bark that echoes authority (albeit adorably), Enzo keeps a close eye on all biscuit-related activity and ensures no suspicious squirrels go unchallenged.
Our Clients
