Supplying Aggregates with Integrity for Over 50 Years
For more than five decades, Thomas Armstrong (Aggregates) Ltd has been a trusted supplier of high-quality aggregates and cement. With a proud heritage and a reputation built on reliability, we continue to serve contractors, developers, and industries across Northern England and Southern Scotland.
Discover the Legacy and Values of Thomas Armstrong Aggregates Ltd.
Thomas Armstrong (Aggregates) Ltd is part of the Thomas Armstrong Group, supplying high-quality aggregates and cement since 1986.
From our quarries in Overby and Cardewmires, and our cement terminals at Workington and Sunderland, we deliver reliable materials across Northern England and Southern Scotland.
Backed by a modern fleet and experienced team, we ensure every order arrives on time and to the highest standards.
Our Heritage & Growth
Thomas Armstrong Group was founded in 1830, establishing a reputation for craftsmanship, reliability, and innovation that has endured for nearly two centuries.
Building on this foundation, Thomas Armstrong (Aggregates) Ltd was formed in 1986 to meet the growing demand for high-quality aggregates and cement across Northern England and Southern Scotland.
Since then, we have expanded through major investments in our Overby Quarry near Silloth and Cardewmires Quarry in Carlisle, strengthening our local supply base. The opening of cement terminals at Workington and Sunderland further extended our reach, ensuring we could deliver at scale to both regional and national projects.
Today, as part of the wider Thomas Armstrong Group, we combine heritage and modern expertise with a commitment to quality, sustainability, and service — values that have underpinned our growth for generations.
1830 - Thomas Armstrong Group Founded
Our Group traces its roots back to 1830, establishing nearly two centuries of industrial and construction heritage.
1986 - Launch of Aggregates Division
Thomas Armstrong (Aggregates) Ltd was established to meet the growing demand for aggregates and cement across Northern England and Southern Scotland.
2009 – Workington Cement Terminal Opened
The first dedicated terminal at Workington enhanced local cement distribution and supply capacity.
2014 - Acquisition of Cardewmires Quarry
Purchasing Cardewmires Quarry in Dalston strengthened our local supply base and expanded regional reach.
2018 – Sunderland Cement Terminal Opened
The addition of the Sunderland terminal expanded distribution reach across Northern England and strengthened logistical efficiency.
2025 - £10 Million Workington Investment
Investment in a modern cement terminal at Workington demonstrates our commitment to growth and innovation.
"At Thomas Armstrong Aggregates, we believe success comes from being dependable, honest, and easy to work with. We don’t just sell aggregates: we support people, projects, and long-term partnerships.
That’s how we’ve done business for over 50 years, and it’s what drives us every day."
- David Lake
Sales Director
Thomas Armstrong (Aggregates) Ltd.
Commitment to Quality & Service
At Thomas Armstrong (Aggregates) Ltd, quality is never an afterthought — it’s built into everything we do. All of our aggregates and cement are UKCA marked and supported by ISO 9001:2015 certification, ensuring every product meets strict standards for safety, durability, and performance.
But quality on its own isn’t enough. We know our customers depend on reliable supply to keep projects moving. That’s why we invest in a modern haulage fleet, managed by an experienced logistics team, to make sure deliveries arrive on time and in the right quantities.
For us, service means more than simply fulfilling an order. It means being a partner you can depend on: providing clear communication, flexible solutions, and the confidence that your materials will be there when you need them most.
Sustainability at Our Core
We recognise that supplying aggregates and cement comes with a responsibility to the environment. That’s why sustainability is built into the way we operate, from the products we supply to the way we move them.
Recycling
Our range includes recycled aggregates, providing a practical alternative that reduces waste and conserves natural resources. By sourcing materials locally from our own quarries, we also cut down on transport miles, lowering emissions and improving efficiency.
Modernisation
Across our operations, we continue to invest in responsible quarrying, modern plant, and waste management practices to minimise our environmental impact. For our customers, it means the confidence of working with a supplier that not only delivers quality, but also supports a more sustainable future for the construction industry.
Our Facilities & Regional Reach
From Overby Quarry near Silloth and Cardewmires Quarry in Carlisle, we supply a wide range of aggregates to meet the demands of construction, infrastructure, and landscaping projects. To complement this, our cement terminals at Workington and Sunderland give us the capacity to handle bulk cement distribution efficiently across the region.
Backed by a dedicated fleet of modern vehicles, we’re able to deliver reliably throughout Northern England and Southern Scotland. Whether it’s bulk loads direct to site or bagged materials for local supply, our network ensures products arrive on time and to the standards our customers expect.
Thomas Armstrong (Aggregates) Headquarters
St Helen’s Lane, Flimby,
Maryport, Cumbria,
CA15 8RY
01900 68114
aggregates@thomasarmstrong.co.uk
Overby Quarry, Wigton
Wigton, CA7 4NF
Supply: sands, gravels, limestone (bulk & bagged)
Cardewmires Quarry, Carlisle
Carlisle, CA5 6LF
Supply: sands, gravels, specialist aggregates
Workington Cement Terminal
Workington, CA14 2JH
Bulk cement distribution
Sunderland Cement Terminal
SR1 2BU
Bulk cement distribution
Looking for Reliable Aggregate Solutions?
Bulk Aggregates, Bagged Products and Expert Advice - Our team is always ready to help.