Who is likely to ask for it
Central government and the NHS
PPN 014 tells these buyers to require it where the contract meets one of its data or ICT triggers. They should have the certificate in hand before award, and it has to be renewed every year for the life of the contract.
Councils and other public bodies
PPN 014 only says they may wish to apply the same approach, so it isn't automatic. Some ask for it on everything and some don't. Check the conditions of participation on each tender rather than assuming.
Primes, OEMs and Tier-1s
Your customer can make it a condition of doing business, whether or not any government rule applies to the job. If a prime is on a government contract, expect the question to come down the chain to you too.
Defence work
MOD contracts and subcontracts can carry their own cyber requirements under DEFSTAN 05-138. If you're in a defence supply chain, ask which level applies to you, and don't assume a Cyber Essentials certificate settles it.
Four traps that catch manufacturers out
1. The certificate has lapsed
A certificate expires after 12 months and you have to go through it again each year. Get the renewal in the diary well ahead of it, because a lapse tends to show up the week a tender closes.
2. The scope misses what the buyer cares about
You can certify the whole business or a well-defined, separately managed part of it, split off by a firewall or VLAN, with the boundary agreed before the assessment starts. If the buyer's data sits outside that boundary, your certificate doesn't answer their question.
3. Nobody has thought about the factory floor
The requirements are written for IT and don't mention production machinery. The test is whether a device can connect to or from the internet, so a connected machine could fall in scope. Settle that at the start. And remember, passing doesn't mean your machines are protected. OT and industrial cybersecurity
4. Your cloud services and logins were left out
Under the current requirements (version 3.3), cloud services hosting your data or services can't be excluded, and logging in to them must always use multi-factor authentication. If you last looked at this a couple of years ago, go through it again.
Why more of your customers may start asking
When Jaguar Land Rover was hit by a cyber attack in 2025, vehicle production at its major UK plants stopped for around five weeks. The Cyber Monitoring Centre estimated the cost to the UK at £1.9 billion and said more than 5,000 organisations were affected. Some suppliers cut pay or laid off staff.
That same October, ministers wrote to the UK's biggest companies asking them to require Cyber Essentials across their supply chains. The government's voluntary Cyber Resilience Pledge now asks signatories to take a risk-based approach to this, which may include requiring it from all suppliers. So if you supply a large company, or supply someone who does, expect the question to reach you, even if you never bid for public work. Some buyers will want Cyber Essentials Plus, so check what yours expects before you choose.
JLR isn't a client of ours, and I'm not suggesting Cyber Essentials would have prevented the attack.
Why waiting for the tender doesn't work
Most manufacturers look at this when a tender asks for it. The form itself isn't what holds you up: IASME says it can take about an hour if your answers are ready, and its assessors aim to come back in about three days.
What takes the time is getting the answers right: patching, admin rights, firewalls and logins. Allow four to eight weeks for that, and two to three months for Cyber Essentials Plus. A tender window can easily be shorter.
What actually works
Work out which of your target buyers need it, set the scope around the data they care about, fix the gaps and then keep it renewed. YBSL is a CyberSmart Registered Partner for Cyber Essentials and Cyber Essentials Plus, and I bring in a cyber specialist from the Cure Alliance who knows what a factory looks like. Cyber Essentials support
One relationship. Every specialist. You get the certificate in place before the tender lands, and you keep it there.