Volumetric Concrete Mobile Plants

Philippa Whitford Excerpts

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.

--- Later in debate ---

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

I apologise for being late, Mr Efford; I was in the debate on contaminated blood. I speak on behalf of Ve-Tech Concrete Ltd, a company in my constituency that operate VCMs. As has already been covered by the right hon. Member for Orkney and Shetland (Mr Carmichael), there are lots of different reasons why there are advantages to VCMs. He highlighted the fact that they can deliver concrete over distances in rural areas that are more than two hours away from a concrete mixing plant. That is an absolute; if someone is further away, a drum concrete mixer cannot serve them. VCMs can cover parts of the UK that others cannot.

VCMs can also wait until the concrete is required. When utilities need to make repairs, even in the middle of the night, or when a repair takes longer, the VCM can wait until the concrete is required. They can deliver multiple small loads of different strengths of concrete to different consumers. Those often include farmers who need a small amount of concrete to make an adjustment around the farm. In rural communities such as mine—farming covers most of my constituency—VCMs are vital.

I agree with the right hon. Member for Leeds Central (Hilary Benn) that it is hard to understand what the 2018 decision was about. If it was about damage to roads, there are other, heavier vehicles allowed on the road. If it is about what VCMs carry, and the suggestion that they should not carry more goods than a goods vehicle, then there is a failure to understand that they are actually plant. They mix the concrete, and therefore have all the equipment required in mixing the concrete. They also have pumping equipment, so that a separate lorry is not needed to turn up and work with a drum mixer to pump the concrete where it is required. I read in the briefing that, because of access issues, it is a VCM that Westminster is using for some of the repairs to the estate. It is about time that we heard a slightly updated approach to VCMs.

Why was the decision made? It is hard to understand if it was on the basis of road damage when there are heavier vehicles. It is certainly hard to understand if it is about climate, when it is clear that VCMs reduce journeys, increase flexibility and keep other trucks off the road. I too hope that maybe there is a change of mind in the Department for Transport, and that the Minister will give hope to the companies in our constituencies, or serving our constituencies, across the UK.

--- Later in debate ---

[Jesse Norman]

It is not true to say there has been a focus on process rather than outcome. On the contrary, it is specifically the concern that there may be an adverse outcome on road wear and tear and safety that sits behind the concern to maintain the position as it is, or has been, on vehicle axle loadings.

Let me come to the wider point that the right hon. Member touched on. I note the points about the value of the industry and that the use of VCMs has important commercial advantages over alternatives, such as allowing an exact quantity of concrete to be produced. That has influenced the implementation of the temporary weight arrangement. However, the 32-tonne maximum weight for four or more axle goods vehicles used in normal service is important in the context of maintaining the roads. It is not possible to allow the general circulation of large numbers of overweight rigid goods vehicles freely on the roads. That would risk substantial structural damage and failure.

For heavy loads, some other construction-related vehicles, such as tippers, are available as six-axle articulated combinations. They can carry higher loads legally. For VCMs, there has been some design development. Part of the earlier reason for the exemption was to allow a period in which there could be design development, but I appreciate that the unladen weight cannot be reduced by the difference between the temporary arrangement and the standard weight limit.

The Department recognises the high level of concern expressed in the debate about the businesses of those operating VCMs. I do not think it is true to say that those businesses have not received a good hearing. They have been extremely effective in making their case over the years, in my experience. The number of colleagues referenced by the right hon. Member for Orkney and Shetland testifies to the effectiveness of the APPG and the sector in mobilising political opinion. Those concerns rightly include the viability of what are, in many cases, small businesses, and we understand that. It is important to recognise, as many Members have today, the contribution made by the industry more widely in the construction sector.

The Department proposes—the right hon. Member alerted us to this key point—to seek evidence about whether the current temporary arrangements for special maximum weights for VCMs should be amended. That comes just over halfway through a temporary 10-year period. The intention is to review the temporary weights and the criteria for them, including how long they will last. The volumetric concrete mixer arrangement is, after all, unique.

In conducting that call for evidence, it will be important to consider whether there are other situations that are in any way similar to the one we have discussed today. National Highways will be commissioned to properly re-examine the bridge load assessments, which have been raised in the discussion, as they relate to VCMs. It is important that all potentially interested parties are able to comment and are reached. We therefore intend that a public call for evidence should be launched during the autumn, and I expect a wide range of parties to be interested and potentially to make submissions.

[Dr Whitford]

Will the Minister reassure us that the call for evidence will be wide-ranging and not just focused on weight on roads? We have highlighted that ending up sending two lorries—a pumping lorry and a concrete lorry—doubles the weight carried by roads, but we have also highlighted the issues of environmental pollution, congestion and reducing carbon, which are even more important these days.

[Jesse Norman]

The hon. Lady is absolutely right that those are important issues, and it is very important that a call for evidence does not become a general trawl through the literature but retains its focus, and its focus will be on whether the current temporary arrangements for maximum weights should be amended. I suspect, although I cannot predict—we will leave this for the Minister and officials who are doing the final work to decide—that any proper consideration or evidence that bears on that question will be potentially submissible.

It is important to say that running at higher than usual weight is not without risk. It increases road wear, and some of that road wear increases very rapidly—indeed, up to the power of four—with axle load. Of course, there are also risks associated with braking and tyre wear. Volumetric concrete mixers are used heavily in some urban areas, including central London, alongside cyclists. As I have said, before 2018, and despite the law, some had operated at higher weights for many years. There is a concern that overloaded or heavy volumetric concrete mixers may be liable to have a higher centre of gravity, which could create safety risks. In some recent examples, VCMs have been stopped and found to have severe defects, including being loaded to a weight exceeding that of even the higher temporary arrangements.

All those issues and evidence will have to be taken into account as part of this proper process of consideration, but I hope that hon. Members present will regard it a useful step forward that the Department has decided to hold a call for evidence. I am grateful for the opportunity to debate these issues today.