About Us

Who We Are

FSD Active Ltd was created to introduce our innovative active vibration control technology as an effective, convenient and sustainable approach to reducing vibrations in buildings and other structures. We have decades of collective experience in vibration analysis, design, measurement and control, which we have applied to some of the most impressive vibration challenges in the UK and around the world.


CALMFLOOR delivers a step-change in our ability to deal with vibrations in both existing and new buildings, giving vibration mitigation and sustainability improvements that were previously unattainable. Our firm grounding in the highest quality academic research coupled with broad industry expertise means that we are best placed to deliver this amazing solution to market.

paul reynolds and emma hudson
calmfloor active mass dampers

About Us

Our Story

FSD Active was incorporated in 2020 to bring floor active mass damping (AMD) technology to market. From our base in the South West of the UK, our focus is to promote the use of this advanced vibration control technology throughout the world.


We are, at heart, problem solvers. After seeing first hand for many years the significant challenges in meeting vibration requirements in modern structures, our team developed CALMFLOOR: a unique option for reducing building floor vibrations which is commercially available worldwide.


Thriving on innovation and quality British engineering, we are also keen to develop bespoke solutions for structures that demand it. At FSD Active, we strongly believe in using the right tool for the job, and when that tool doesn’t exist yet – we create it.

Get to know us

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calmfloor corporate brochure
AKT II logo

“As a structural engineering consultant we often develop and embrace new and innovative solutions to solve complex issues in building design. We are thus proud to be the first consultant in the world to successfully apply the CALMFLOOR vibration control on a carbon efficient, lightweight and open-plan composite floor. The new active mass damping technology transformed and improved the floor’s vibration behaviour beyond expectations. By virtually eliminating floor vibration response under a footfall dynamic loading, the results of CALMFLOOR is impressive. It has an exceptional performance, is very easy to install and - most importantly - it has excellent reliability, operating flawlessly since the installation almost a year ago. CALMFLOOR is a real game-changer when it comes to solving complex floor vibration issues.”

thornton tomasetti logo
Thornton Tomasetti

"CALMFLOOR is one of the most exciting vibration control products to emerge in the last 20 years. It is the world’s first commercially available mechatronics device specifically developed to replace structural materials as a solution for excessive resonant floor vibrations. This is crucial as vibration serviceability has become the governing design criterion for many modern open-plan, long-span commercial floors, determining the size and shape of millions of square feet that Thornton Tomasetti designs every year in the US and around the world."

ARUP logo

“The vibration control technology supplied by FSD Active is hugely effective in reducing floor vibration and currently a unique product – it’s a go-to solution for lively floors when we require a step change in vibration performance, with minimal site work required and negligible impact on the base-build. The product is backed by a highly experienced and capable team providing great support. We have seen the successful installation of the system in a high-profile tower in London and are currently considering other projects for installations.“

About Us

Meet Our Team

Paul Reynolds


Emma Hudson


Steven Senior


Alex Pavic


James Brownjohn


Tom Weller

Non-Executive Director

Yichao Ma

Mechanical Prototyping and Test Engineer

Enrico Samori

Quality Manager


Office Administrator

The heart of CALMFLOOR

Our Core Values


We are committed to promoting sustainability and minimizing our environmental impact. We strive to create products and services that are environmentally friendly, energy-efficient, and promote a healthy lifestyle. We actively seek ways to reduce waste, conserve resources, and support sustainable practices throughout our operations.


At FSD Active, our primary focus is always on our customers. We strive to understand their needs, exceed their expectations, and provide them with exceptional products and services. We are committed to building long-lasting relationships based on trust, integrity, and customer satisfaction.


We believe in the power of innovation to drive progress and shape the future. We encourage our employees to think creatively, explore new ideas, and embrace emerging technologies. We foster a culture of continuous improvement and actively seek out innovative solutions to challenges in the fitness and sports industry.


We are dedicated to delivering excellence in everything we do. We set high standards for ourselves and work tirelessly to achieve them. Our team members are passionate about their work and are committed to delivering superior quality in our products, services, and interactions. We constantly strive for excellence and push the boundaries of what is possible.


We value the strength of collaboration and believe that teamwork is essential for success. We foster a supportive and inclusive work environment where every individual is valued, respected, and encouraged to contribute their unique skills and perspectives. We actively promote open communication, knowledge sharing, and collaboration across all levels of the organization.

Experience across multiple industries

Our Targeted Sectors

commercial and retail
Commercial & Retail
entertainment and leisure
Entertainment & Leisure
museums and libraries
Museums & Libraries
high rise building
High-Rise Buildings
General Purpose Laboratories