CE Marking Requirements: What I Got Wrong the First Time

CE marking requirements come down to three things: pick the right EU directive or regulation for your product, prove you met it, and affix the mark correctly. There is no single EU-wide certificate. Most products are self-declared; only higher-risk categories need a notified body.

That is the clean version. My first attempt was a mess, and it started with a phone call from a friend who runs a small stainless-steel fabrication shop.

What are the CE marking requirements, in plain English?

The requirements are a process, not a document you buy. You identify the applicable legislation, follow the conformity assessment route it sets out, build a technical file, sign a Declaration of Conformity (DoC — your signed statement that the product meets the rules), then affix the mark.

Most people I talk to think CE is a certificate issued by somebody in Brussels. It is not. No central EU office approves products.

The CE marking requirements EU importers and manufacturers deal with are spread across roughly two dozen directives and regulations, and no single page lists them all for you. A stainless bracket might fall under the Machinery Regulation, the Low Voltage Directive (2014/35/EU), the EMC Directive (2014/30/EU), or none of them, depending on what it does and where it is installed. As of November 2026, the old Machinery Directive 2006/42/EC still governs most machinery — the new Machinery Regulation (EU) 2023/1230 starts applying in January 2027, so check which one your product sits under before you write anything down.

My friend's shop made guard rails and mounting frames. I confidently told him we needed "a CE certificate." Two weeks and one useless quote later, I realized we needed to read a scope article first.

Do I need a notified body, or can I self-declare?

For most products you self-declare. No third party, no lab visit, no fee — just your own assessment and your own paperwork. A notified body is only required when the specific directive names third-party involvement for your product category.

Where does that happen? Medical devices under the MDR, PPE in category III, certain pressure equipment categories, some construction products. If your directive's annexes never mention a notified body, hiring one is money on fire.

Here is the rough shape of the three routes I keep seeing:

Route	When it applies	Typical timeline	Typical cost
Self-assessment + technical file	Most machinery, electrical and EMC-driven products	2–8 weeks	€0 in fees, 20–60 hours of your own time
Notified body EU-type examination	Categories the directive puts under third-party control	4–12 weeks	roughly €3,000–€12,000
Notified body + QMS surveillance	Higher-risk categories, some PPE and pressure equipment	3–9 months	€8,000–€25,000 plus annual audits

Those figures are ranges from quotes I have seen and from consultants I have argued with, not a price list. Your directive decides which row you are in, and that part is not negotiable.

Is CE marking still accepted in the UK?

Yes, for most goods. The UK extended recognition of CE marking indefinitely for products covered by the relevant business department legislation, so CE still works in Great Britain and UKCA remains a valid alternative. Northern Ireland runs its own arrangement, where CE or UKNI applies.

What trips people up is the carve-outs. Medical devices, construction products and a handful of other categories sit on different timelines and rules, and "indefinitely" does not cover all of them.

So when someone searches CE marking requirements UK, the honest answer is: it is the EU requirements plus a check on which UK regime your product falls into. Two hours of reading beats a rejected shipment at Dover.

How big does the CE mark have to be, and where does it go?

At least 5 mm tall in the vast majority of cases, drawn in the prescribed proportions, and affixed to the product itself. The CE marking requirements size rule is one line in most directives, and people still miss it.

The proportions come from the model in Annex II of Decision 768/2008/EC — the two letters form one shape, and you scale them together. Never stretch one letter to fit a label.

If the product is too small, or the directive explicitly allows it, the mark goes on the packaging or the accompanying documents. A few directives permit a reduced size. Most do not.

And here is the correction I wish someone had handed me early: the CE mark is not a safety guarantee or a quality badge. It is the manufacturer's declaration that they take legal responsibility for compliance. That is all it is. A sticker that peels off in a cold warehouse is also not compliant — the mark has to be legible, visible and durable.

What actually goes in the technical file?

The technical file is the evidence folder behind your declaration: drawings, risk assessment, test reports, instructions, and a signed copy of the DoC. Keep it for 10 years after the last unit is placed on the market.

If your material spec leans on an ASTM material standard — say ASTM A500 for structural tubing, or ASTM E8 tensile results from a supplier — those reports belong in the file, with the edition of the standard stated. Auditors ask "which revision?" far more often than you would expect.

Document control is where this lives or dies. The habits are the same ones an ISO 9001 requirements checklist is built around: version numbers, approval dates, one named owner per document. A printed ISO 9001 requirements pdf on a shelf helps nobody. A controlled index does. I learned that the hard way, and I wrote up how that went sideways on my first audit if you want the gory version.

What are the most common CE marking mistakes?

The biggest one is affixing the mark before the technical file exists. The mark comes last, always.

Others I have watched people make:

1. Assuming the EU importer carries the whole compliance burden. They carry duties, but if you manufacture the product, the responsibility is yours.
2. Writing a DoC that names no legislation and no standards. It needs both, plus a named signatory.
3. Treating an ISO 9001 certificate as CE compliance. They are different systems. ISO 9001 requirements training teaches process discipline, not product law, and a certificate referencing ISO 9001 requirements 2015 does not put a mark on anything.
4. Forgetting that instructions and safety information must be in the language of the country of sale.

My friend's brackets finally got marked in week nine, not week two. If I were starting again today, I would spend the first 20 minutes writing down the exact name and number of the legislation that applies — nothing else, just that one line. Everything after it gets easier.