Holcim UK has moved nearly 20,000 tonnes of aggregates by rail to the Port of Sunderland since June, launching a new weekly service from its Bardon Hill quarry in Leicestershire that the company expects to carry 100,000 tonnes in its first year.

The building materials producer developed the route after what it describes as "changing supply arrangements" at the Port of Tyne put pressure on its existing logistics serving North East England. RailFreight.com has asked Holcim to specify what changed.

GB Railfreight operates the trains. Each service runs 19 wagons carrying approximately 1,425 tonnes of aggregates destined mainly for asphalt production. Fourteen trains have run so far, with the material primarily supporting Northumbrian Roads and also supplying Hulands Asphalt.

The arithmetic of the first-year target points to growth ahead. Reaching 100,000 tonnes at the current payload would require roughly 70 trainloads, against the 14 operated since June. Frequency will therefore need to rise beyond the present one-train-per-week pattern if Holcim is to hit its projection — a target the company itself frames as an expectation rather than a measured result.

Why Sunderland?

Mustapha Nyass, Regional Operations Manager at Holcim UK, said the company chose to restructure rather than absorb higher costs.

"We faced a real supply challenge, but the answer was not simply to absorb higher costs or accept less flexibility," Nyass said. "By using Sunderland's railhead, storage space and port capability, we have created a practical new route that supports local construction, strengthens our asphalt operations and gives us room to grow when demand increases."

According to Holcim, moving the required volumes by road was not commercially realistic. Shipping alternatives depended on vessel size, material sources and available port capacity. Sunderland offered a way through: an existing rail connection, handling equipment and storage facilities that required no substantial new investment.

The port can store up to 6,000 tonnes of aggregates. The service uses open box wagons, which allow unloading with equipment Sunderland already has. That choice involves a trade-off: open box wagons need more manual handling than automated bottom-discharge wagons, but they spare Holcim the cost of dedicated unloading infrastructure at the railhead.

What does the new route mean for Holcim's rail fleet?

Holcim was already a significant rail freight customer before the Sunderland service began. In December 2024, GB Railfreight extended its aggregates transport contract with the company — then operating as Aggregate Industries — for another four years. That agreement covered movements from Bardon Hill and from the Isle of Grain in Kent.

The Sunderland route therefore puts wagons Holcim had already committed to better use, while adding traffic through an underused railhead. Damien Preece, General Manager – Rail at Holcim UK, said the economics depend on utilisation.

"Railheads and wagons carry fixed costs, so the more volume you can move through them, the stronger the economics become," Preece said.

The company's stated 100,000-tonne first-year figure remains a projection. The measured result to date is the nearly 20,000 tonnes carried across 14 trains since June.

How does the service fit UK rail freight policy?

The launch comes weeks after the UK government set an interim target of 40% rail freight growth by 2040, towards a longer-term ambition of 75% growth by 2050. Construction freight is expected to be a major contributor to those figures: the government estimates potential growth of 45% in the sector by 2040.

The September announcement included no new funding and no specific measures to achieve the targets. The government does intend to give Great British Railways a statutory duty to promote rail freight growth, with a longer-term rail strategy expected from autumn 2027.

Against that policy backdrop, the Holcim service is a modest but concrete addition: roughly 70 trainloads a year, if the projection holds, would each displace around 1,425 tonnes of aggregates that road haulage would otherwise carry in the North East — volumes Holcim says were not commercially realistic to move by truck.

What happens next?

The immediate variable is frequency. Fourteen trains in roughly four months of operation averages close to the current weekly cadence, so hitting 100,000 tonnes within the first year will require Holcim and GB Railfreight to add paths on the Bardon Hill–Sunderland corridor. The company's stated intention to "grow when demand increases", coupled with the fixed-cost economics of railheads and wagons that Preece describes, suggests volume growth rather than cost saving is the route's operating logic.

The unanswered question is what changed at the Port of Tyne. Until Holcim responds, the scale of the supply disruption that triggered the new route — and whether Tyne volumes might return — remains open. Either way, the Sunderland service now stands as part of the government's 2040 growth agenda, with its first-year target of 100,000 tonnes serving as the benchmark against which the route's expansion will be judged.