Volumetric Concrete Mobile Plants

Debate between Alistair Carmichael and Philippa Whitford

Thursday 22nd June 2023 Westminster Hall

[Mr Carmichael]

Yes, indeed. I think the hon. Gentleman knows the answer to that question. The truth of the matter is that heavy goods vehicle and lorry drivers are in scarce supply, and that is being felt not just in the construction industry but throughout the supply chain for just about every possible sector. That is another of the operations of the law of unintended consequences.

The frustration that brings us to the debate is that there has been strong opposition to the plans, led by organisations such as the Batched on Site Association, which feel that, until today, they have not been able to get a hearing. I very much hope that, after the Minister’s response, they will feel that they are at last being heard.

The change has no support among the operators, will yield no benefits to the construction industry overall and threatens the very future of VCMs in this country and the benefits that come with them. The most direct consequence of the Government’s plan is that VCMs will be limited in the amount of concrete they can carry. Operators continuing after 2028 will have to carry less weight, which is inefficient for them, their customers and the overall economy.

Traditional drum mixers and VCMs can produce something in the region of 8 cubic metres of concrete. However, because VCMs carry all the extra equipment that turns them into mobile plants, including conveyor belts to mix the sand, mixing equipment, cement, water and aggregates, they weigh notably more. Forcing VCM weights down to 32 tonnes cuts their capacity to between 6.5 cubic metres and 7 cubic metres of any mix of concrete on one trip. That has a significant impact on their efficiency, with knock-on effects on cost-effectiveness and the viability of the industry to continue at its current capacity.

The industry predicts that the changes coming in 2028 will have a dire impact on the sector. The Minister will have heard dire predictions from sectors affected by change before—we all have—and scepticism when such interests bring forward their concerns is healthy and necessary in Government. There is, however, significant and objective evidence that points to the industry’s predictions being well founded, and possibly even understated. After the Department announced the weight limit reduction, sales of VCMs fell from 55 million in 2017 to 9 million in 2020—still some eight years ahead of the deadline. Operators have already started voting with their feet—or, more accurately, their wheels—to the detriment of the sector and the construction industry as a whole. If the industry suffers and shrinks because of the regulations, many of its benefits will be lost.

Furthermore, traditional drum mixers can carry only one strength of concrete at a time, whereas VCMs have the benefit of carrying multiple if required. Take this simple example: if a customer needs only 4 cubic metres of strong concrete and 3 cubic metres of medium-strength concrete, they will have to pay for two concrete mixers if heavier VCMs are banned. VCMs mix concrete on site and can do so at whatever strengths are required and, crucially, all on one lorry. Without VCMs, such situations would be much more difficult to manage. That is why VCMs are such an important, if small and perhaps slightly niche, part of the concrete sector and the construction industry.

I have had representations from right across the country since securing this debate a mere eight days ago. The message from every corner—from those who are charged with representing the sector as a whole, to individual companies—remains the same. Sonny Sangha, founder of iMix Concrete, who operates a 32 tonne VCM as well as his current fleet of four traditional 38.4 tonne VCMs, talked to me about the estimated impact of the Government changes. He said:

“We estimate an annual loss of turnover of around £100,000 per VCM at 32 tonnes. The loss of capacity also means the need for purchasing more vehicles to accommodate the workload now that we have VCMs on both weight limits...We can see a huge difference in output and economic performance between the vehicles. The new 32T vehicle is only able to carry around 6/7m3 of concrete (depending on mix type), whereas with the other vehicles we can carry a comfortable 8m3 of concrete.”

The root cause of the problem is that there has not been an adequate economic or environmental impact assessment. The consultancy group Regeneris was brought in by the Batched on Site Association to calculate the impact of cutting the weight of VCMs to 32 tonnes. It found that a 27% cut on a 44 tonne VCM and a 16.6% cut on a 38.4 tonne VCM is likely to add 14 million more lorry miles to UK roads and 598,000 more lorry journeys each year. There will be 200 more VCMs on the roads to make up for the carrying of smaller loads, pumping 120,000 additional tonnes of carbon dioxide into the atmosphere. There will be a 20% increase in CO₂, nitrogen oxide and particulates, generating extra carbon costs in excess of £7 million per annum. That will also require an additional 200 HGV drivers at a time of shortages. On top of that, because drum mixers have a two-hour production life for concrete, much of the concrete going to landfill comes from drum mixers.

[Dr Philippa Whitford (Central Ayrshire) (SNP)]

Is the two-hour issue not absolutely critical? Some communities, particularly in remote constituencies across Scotland and rural parts of England, are simply outwith the two-hour distance, and therefore the concrete will end up hardened and generating more waste in landfill.

[Mr Carmichael]

It is absolutely critical, and it adds massively to the already significant extra costs for construction projects in those remote communities. Indeed, as the MP for Orkney and Shetland, I probably know that better than most.

I am not going to steal the Minister’s thunder; he has kindly been in touch with me.