Contact us

x icon
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Low Carbon Materials (LCM) is one of nine global companies chosen for international Holcim accelerator

concrete blocks photo


  • Low Carbon Materials (LCM) has been accepted for the groundbreaking Holcim accelerator alongside eight innovative companies.

  • The sixth-month programme will pair Sphera with partners from Aggregate Industries, Mott Macdonald, Bouygues and Sika.

  • OSTO – LCM’s carbon negative lightweight aggregate for concrete blocks offers a 100% reduction in embodied carbon.

What is the Holcim accelerator?

Holcim plans to lead the global construction sector to net zero, building progress for people and the planet. The Accelerator aims to move us further to that goal by ‘fostering innovation collaboration along the construction value chain.’

With over 400 applicants to choose from, 9 have been selected to join the program, offering mentoring, worldwide technical support, fantastic networking opportunities, and much more.

Each season of the accelerator consists of numerous challenges set by multiple country teams. The applicants can apply to present a location-based solution.

LCM’s work will support the UK’s challenge, which focuses on circular economy innovation. The UK partners are looking for a solution that maximises carbon reduction and cost value of used construction materials. They also aim to minimise waste and re-introduce it into our value chain with maximum impact.

Following LCM’s latest funding round, the accelerator will allow the growing team to showcase OSTO, Sphera’s carbon negative lightweight aggregate, to a global market and support with the development of new carbon-reducing aggregates. Sphera’s aggregates fit the UK’s theme by using circular economy techniques to recycle the unrecyclable, resulting in an embodied carbon reduction.

LCM's CEO and Co-Founder Dr. Natasha Boulding had this to say:

“I am excited that Low Carbon Materials has been selected as 1 of the 9 most innovative start-ups in the construction sector from across the globe to take part in the Holcim Accelerator! The expertise and resources available from the programme will catapult the business to the next level. We promise to always push the frontier of sustainable and scalable construction.”

Who is involved?


Holcim is one of the world’s global leaders in building solutions. They are also a proactive advocate of greener cities, more innovative infrastructure and improving international living standards.

Holcim’s cement, ready-mix concrete, aggregates and other products are behind some of the world’s most trusted building sector brands such as ACC, Disensa, Geocycle and Lafarge.

As the industry’s first net-zero target setter for 2050, this accelerator continues its momentum towards a greener built environment.

Overall, Holcim’s plans for the future are a significant vote of confidence in the sector’s sustainable transition.

Aggregate Industries

With over 200 sites and around 3,700 dedicated employees, they provide everything from aggregates, asphalt, ready-mixed concrete and precast concrete products.

They are a leader in green construction materials and the first company in the world to be certified to BES 6001 standards by BRE.

LCM’s team are looking forward to Aggregate Industries support – particularly with concrete trials and new product development.

Mott Macdonald

Mott Macdonald is a global engineering, management and development consultancy.

The company’s purpose is to improve society by considering social outcomes in everything it does.

Mott Macdonald relentlessly focuses on excellence and digital innovation, transforming its clients’ businesses and communities.

Their network of experts looks at problems from fresh angles and finds opportunities in complexity. They bring together diverse skills, experience and insight, to turn obstacles into sustainable solutions.


Sika Group is a globally active speciality chemicals group based in Switzerland but reaching 101 countries worldwide. It has more than 27,000 employees and generated annual sales of CHF 9.3 billion in 2021.

It strives to achieve sustainability across the entire value chain through innovation.

Bouygues construction

Bouygues have projects in the building, public works, energy and services sectors.

As a leader in sustainable construction, the group has made shared innovation its top added value.

They also deliver all projects with sustainable development in mind.

They have worked with clients like the NHS, the University of Essex and UK government bodies and councils.

LCM looks forward to working with these world-leading partners on circular economy solutions.

Other participants:

Alongside LCM, there are several other innovative companies joining the accelerator programme this season including

  • CLC Global – Social housing solutions (Columbia)

  • Inex Circular – Sustainable building materials (Canada)

  • Saeki Robotics – Smart building design (Switzerland)

  • ThroughPut AI – Data management tool (USA)

The team at LCM is honoured and thrilled to have been selected out of over 400 applicants to join the accelerator program and are looking forward to applying what the course will bring to growing their business even further, continuing to be building positive, carbon negative.

To find out more about the accelerator, click here.