Why Manufacturers Still Run on 20-Year-Old Systems

By Jonathan, founder of DMG (Duckham Meridian Group)

Walk into most manufacturing plants or distribution warehouses in the UK and you will find the same scene: clipboards alongside computers, spreadsheets doing the work that ERP systems should be doing, and software that predates smartphones running the backbone of the business. It is far more common than the tech press would have you believe, and far more costly than the businesses themselves realise.

I have spent more than 20 years working in operations and supply chain. The resistance to IT modernisation in this sector is not laziness or ignorance. It is rational, up to a point. Understanding why it happens is the first step to understanding how to fix it.

Why manufacturers and distributors resist change

The "good enough" trap. Legacy systems are deeply embedded. The warehouse management software from 2003 knows every quirk of the racking layout. The ERP from 2006 has been customised so many times it barely resembles the original product. People know how to make it work. Replacing it feels like pulling a thread that could unravel everything.

Upfront cost fear. Traditional enterprise software is sold with six-figure licence fees, multi-year implementation projects and expensive consultants. For an SME running on tight margins, that is simply not a conversation that gets started. The perception is that modernisation is for large corporates with IT departments, not for businesses with 50 or 200 people on the shop floor.

Fear of disruption. Manufacturing is unforgiving. A production line cannot stop because the new system has a data-migration error. A distribution depot cannot miss delivery windows while staff are on training courses. The cost of getting a system change wrong is immediate and measurable. That fear, more than anything else, keeps old systems in place.

Previous failure creates scar tissue. Most operations leaders have at least one story of a botched IT project: the ERP rollout that went over budget, the system that never quite did what the sales demo promised, the months of parallel running that drained the team. One bad experience is enough to put a business off trying again for a decade.

No internal champion. Unlike finance or HR, operations teams rarely have a dedicated IT resource who understands both the technology and the process. Without someone who can translate between the two worlds, digital transformation stalls at the ideas stage.

The real cost of standing still

Old systems are not free. They just hide their costs differently.

Rekeying data between systems, running parallel spreadsheets, resolving stock discrepancies manually: these are full-time jobs that exist only because the technology cannot do them automatically. Every manual step is a potential error. Every error is a customer complaint, a write-off or a compliance failure.

Old systems also lack visibility. If a production manager cannot see live stock levels, demand forecasts and supplier lead times in a single view, they are making decisions on gut feel. That leads to overstock in some lines, shortages in others, and a supply chain that reacts instead of plans.

And the compliance burden is growing. From product traceability requirements to ESG reporting obligations, regulators are asking for data that systems built in 2005 were never designed to produce.

How to approach modernisation

The answer is not to rip everything out and start again. For most SMEs that approach is too risky and too expensive. The smarter route is incremental modernisation: replace one capability at a time, prove the value, and build confidence before the next step.

The shift to subscription software has changed the economics fundamentally. Instead of a large upfront licence, a business can now access a capable ERP or supply chain planning system for a few hundred pounds a month, with no hardware to install, no multi-year commitment and no dedicated IT team required. Implementation time is measured in weeks, not years.

The benefits of getting it right compound over time. Real-time inventory visibility reduces carrying cost. Supplier risk monitoring reduces disruption. Joined-up demand and production planning turns reactive firefighting into controlled execution.

Where DMG fits in

At DMG, we built our products for the businesses that enterprise vendors overlook: the UK manufacturer with 30 to 300 employees, the distribution business that has outgrown spreadsheets but cannot justify a six-figure system.

Orbis ERP is our operational core: production, inventory, purchasing, sales, finance and reporting in one platform, priced as a monthly subscription.

SupplyThread gives supply chain teams supplier risk intelligence, with early-warning alerts before a supplier failure becomes a crisis.

PlanThread is our planning and inventory layer: demand forecasting, planned orders and capacity checks, designed to give planners the visibility they need to stop firefighting.

All three are live, with a 14-day free trial on self-serve plans. Book a demo if you would like to talk it through.

Modernisation does not have to be a bet-the-business project. It can start with one problem, one system, one team. The businesses that take that first step usually find the second one easier.