The Hidden Factory Hiding Inside Your Existing Operation.

Author: Lee Mackreath, Head of Commercial, Cooper Software

Overall Equipment Effectiveness, the standard measure of how much planned production time is spent making good product at full speed, has an awkward habit of getting worse the moment it is measured properly. World class is widely cited at 85%, a figure that originated in discrete manufacturing, assembly and metal fabrication among them. Process environments, food and drink included, carry mandatory sanitation and changeover cycles built into the production model itself, so their realistic ceiling tends to sit a little lower. What holds regardless of what is being made is the direction of travel. Several independent OEE analytics providers report that manually reported OEE consistently comes in higher than automated, sensor-measured OEE. The gap only moves one way once a plant starts measuring properly.

That gap rarely shows up as a single dramatic failure. It shows up as a maintenance job that gets missed because the person who would have caught it early has left the business. A production plan that is out of date by the time it reaches the shop floor because nobody had time to update it after a supplier confirmed a short delivery. A changeover that takes longer than it should for reasons nobody has quite got round to investigating. None of these individually explain a gap of that size. Together they explain most of it.

Workforce data from Make UK adds a second layer to the same problem. Nearly three-quarters of manufacturers now cite a shortage of technical skills as their biggest barrier to recruitment and the picture on technology adoption is just as stark. Only 2% say artificial intelligence is genuinely embedded across their operations and over half cite skills shortages as the main reason it has not gone further. Make UK's own estimate puts the combined cost of unfilled vacancies and digital capability gaps at around £6 billion a year in lost output against a potential £150 billion boost if digitalisation across the sector caught up with its ambition.

Sustainability reporting adds a third layer for many UK manufacturers. This one already applies directly rather than trickling down through a customer relationship. SECR, the UK's mandatory carbon and energy disclosure framework built into the Companies Act 2006, already requires most large manufacturers to publish their energy use, emissions and efficiency actions every year, signed off by auditors. It is also mid-change rather than settled, being phased into the new UK Sustainability Reporting Standards from 2027.

What connects all of this, the maintenance job missed, the plan nobody updated, the changeover nobody investigated, is not technology for its own sake. It is that all of it depends on knowledge and data that currently live in the wrong place: in one person's head, in a spreadsheet nobody else opens, in a system built to record what happened rather than help anyone act on what is about to. There is a term for the capacity this leaves on the table: the hidden factory. Coined by the quality pioneer Armand Feigenbaum in the 1970s, it describes the production capacity already sitting inside a plant's existing equipment and shifts, lost to exactly this kind of friction rather than captured as output. It is not a criticism. It is closer to an asset nobody has finished counting.

This is exactly the ground a new IFS field guide, The Real Cost of Standing Still, covers well. Rather than making the case in the abstract, it sets named manufacturers and measured results against five of these pressures. A distillery that cut its emergency repairs and is forecasting £8.4 million in annual savings at one site. A technology manufacturer that lifted its first time fix rate from 84% to 97% across 85,000 installations. A wire manufacturer forecasting a 50% productivity increase simply by giving planners a live view of their operation rather than a document that is wrong before it is finished.

None of these results depended on replacing people. They depended on making sure the knowledge and data inside the business were available to more than the one person carrying them.

Closing the gap inside a hidden factory does not happen from a single project and no manufacturer should expect it to. But it starts with an honest look at where the gap actually comes from. The guide is a genuinely useful place to start that conversation.

Read The Real Cost of Standing Still guide here