Working for yourself shouldn’t mean defending yourself
The same monitoring that watches over our largest clients, running on your computer. £35 per computer a month. No base fee, no minimum, nothing else to pay.
Find out where you actually stand
Book your free consultation30 minutes. No obligation. You keep the findings either way.

The people attacking your business go to work in the morning. They have teams, tooling, budgets and targets. Some of them have HR departments.
There's nothing wrong with what you already have. Antivirus, a sensible password, a laptop that installs its own updates — that was a reasonable position to take, and for years nobody offered you anything better.
But security is a different discipline. It needs someone watching around the clock, someone who knows what a compromised login looks like at 3am, and someone whose job is to ask what happens when — not if — something gets through.
We built this tier because we kept turning one-person businesses away. The package we sell to a company of fifty makes no sense for somebody working alone, and even the one we sell to a team of three assumes there are staff. Quoting you for either would have been dishonest. So for years the answer was no.
There's a reason for that, and it's worth knowing. Most of what defends a computer is software, and software costs us the same whether it runs on three hundred machines or on yours. What doesn't scale down is people — the assessment, the hardening, the monthly report, the time. So we took those out rather than charge you for them and hope you never asked. That is the entire reason this can be £35 a computer instead of a project quote.
So the work quietly doesn't get done, and nobody notices until it matters.
That gap is exactly what QuantumCare Sole Trader fills.
Taken someone on? Micro Business is the right package, and it isn’t a rounding — it starts at £206 a month, because it adds cloud backup, hardening, vulnerability assessment, training and a monthly report. We’ll tell you before you get there rather than after. See Micro Business.
One price, one list. Everything in the first table runs on every computer you protect. Everything in the second comes with it, whether you have one computer or four.
The monitoring below is identical to our largest clients’. The software watching your computer is the same software watching a two-hundred-person company — not a cut-down version — because it costs us the same either way. What you are not paying for is the human work that a business with staff needs. The next section lists exactly what that means.
Add on if you need it: email domain protection, which stops criminals sending email that looks like it came from you, is £30 per domain per month. It is not included, and most one-person businesses do not need it — we’ll tell you honestly whether yours does.
This is the longest list on any QuantumCare page, and that is deliberate. £35 a month buys less than £206 does. Here is exactly what less means.
None of this is a trap. Everything above was taken out on purpose to reach £35, and every one of them is listed rather than buried. If it turns out you need one, tell us — Micro Business starts at £206 a month, which is a real step rather than a rounding, and we’ll be straight with you about whether it is worth it for a business your size.
Four steps from first conversation to ongoing protection. No long procurement, no surprise costs.
A conversation, not a pitch. We work out whether you’re a fit, and you work out whether we are.
A one-off look at your computer and what’s exposed, done during the consultation. You get the findings whether or not you go ahead.
We install it, configure it and check it is working — usually a day or two from agreement, and mostly without you noticing.
Round-the-clock monitoring, updates applied in the background, and a straight answer whenever you have a security question.
The findings are yours either way. Whatever you decide after the consultation, you’ll leave knowing exactly where you stand — and if the honest answer is that you don’t need us, we’ll say so.
See your price before you speak to us
We publish our pricing because you shouldn't have to sit through a discovery call to find out whether you can afford it.
QuantumCare
£35 per computer, per month
Real cyber security for a business of one. Set the number of computers you want protected to see your price.
No base fee — one computer is a real customer, not an exception.
Count every computer you actually work on — a laptop and a desktop are two. Each one gets round-the-clock threat monitoring, patching and web filtering. Phones and tablets aren’t counted and aren’t covered.
Stops criminals sending email that looks like it came from your address. £30 per domain, per month, and it is not included as standard. Leave it at zero if you don’t have your own domain — most one-person businesses don’t need this, and we’ll tell you honestly whether yours does.
Your monthly price
£35/month
That’s £420.00 a year, and it includes the annual security training.
You save £0.00 a month against the rolling rate — £0.00 over the year.
All prices exclude VAT. No base fee, no minimum, no setup fee.
That’s a lot of computers for one person. If you employ anybody — even part-time — Micro Business is the right package: it adds cloud backup, hardening, vulnerability assessment and a monthly report, and starts at £206 a month. We’d rather tell you now than take your money.
Book a call£35 each per month
No extra charge, however many computers
Not included: backup of any kind, identity protection,
vulnerability assessment and scanning, proactive hardening, a monthly written report,
Cyber Essentials and insurance readiness, and phishing simulations. Those sit on Micro
Business, and every one of them is explained in the section above this calculator.
IT support is not included on any tier — QuantumCare is a cyber
security service, not a helpdesk.
On-site visits are charged separately — £240 for a short visit up
to two hours, £400 a half day, £760 a full day, plus travel and accommodation at
cost and never marked up. Short visits are West Sussex and nearby; further afield starts at a
half day. We work remote-first and at this price a visit almost never makes sense.
Indicative pricing based on computer count. On-site visits are not included — they are charged separately, and the rates are in the FAQ below. Final quotations may vary where bespoke requirements apply. QuantumCare is delivered by Systems Secure Ltd.
£35 per computer per month covers the threat monitoring, security monitoring, patching and web filtering on every machine you work on. It also covers your annual security training and the ability to ask us a security question whenever you have one, at no extra charge.
There is no base fee. One computer is £35, two is £70. Count the computers you actually work on — a laptop and a desktop are two, and phones and tablets aren't counted or covered.
Email domain protection is £30 per domain per month, and it is not included. Most one-person businesses don't need it. If you invoice by email from your own domain, ask and we'll tell you honestly whether yours does.
On-site visits are not included. When one is genuinely needed: £240 for a short visit of up to two hours, £400 for a half day, £760 for a full day — plus travel and accommodation at cost, never marked up, and agreed with you before anything is booked. Short visits are West Sussex and nearby; further afield starts at a half day. We work remote-first, and most things never need one.
All prices exclude VAT. Pay monthly either way — there's nothing to pay upfront, and no setup fee.
A business of one gets the same monitoring
as a business of two hundred
Working for yourself usually means being told to buy the consumer version and get on with it. This is built the other way round — the software watching your computer is the software watching our largest clients, and the price is published so you never have to ask what you’re worth to us. The list of what it doesn’t include is longer than the list of what it does, and it is printed on this page rather than buried in a contract.
One computer is £35 and that is the whole invoice. There is no floor to climb over before we’ll take you seriously, and no discount you are missing out on for being small.
The software watching your computer is the software watching a two-hundred-person business. Identical, not a cut-down edition, because it costs us the same either way.
Rolling monthly means 30 days’ notice and no penalty. No setup fee and nothing to pay upfront — if it isn’t earning its keep, you leave and we won’t make it difficult.
The day you take somebody on, Micro Business becomes the right package and it costs a good deal more. We’ll say so before you get there rather than after — and it’s a conversation, not an upsell.

Founder, Systems Secure Ltd
Systems Secure has been trading since 2010. In that time the thing that has changed most is not the threats — it is how small a business now has to be before it is worth attacking.
QuantumCare is how I do this work now. A small number of clients, a complete programme rather than a shopping list of products, and one person who knows your business well enough to be useful at short notice.
When you ring, you get me.
What the letters actually mean, since nobody explains them.
CISSP
The senior, internationally recognised security qualification. Requires years of documented experience before you can even sit it.
C|CISO
Focused on running a security programme — governance, risk and reporting to a board, rather than configuring the technology.
C|EH
Formally trained in the techniques attackers use. It is difficult to defend against methods you have never seen from the other side.
NCSP
Qualified to build and run a security programme against the NIST framework — the structure insurers and larger clients increasingly expect to see behind your answers.
Security+
The foundational security certification, and a common baseline requirement in government and defence supply chains.
Winner — West Sussex Business Awards 2025
Winner — E2 Media Awards 2025
Systems Secure Ltd · trading since 2010 · company registration 7295869 · Copthorne, West Sussex
The main ones that come up on almost every call, answered here so you don’t have to book one to find out.
QuantumCare Sole Trader costs £35 per computer, per month. There is no base fee and no minimum, so one computer is £35 a month and two computers are £70.
Email domain protection is an optional extra at £30 per domain per month and is not included as standard. Nothing else is added on.
All prices exclude VAT. There is no setup fee and nothing to pay upfront, and it is rolling monthly — cancel any time with 30 days' notice. Use the calculator further up this page to see your exact figure before you speak to anyone.
It is cheap because things have been taken out, and they are all listed further up this page rather than discovered later.
What is not cheap is the software. The threat monitoring on your computer is the same product watching a two-hundred-person business, at the same cost to us, because software doesn't get more expensive per machine when there are more machines. What you are not buying is our time — no vulnerability assessment, no hardening, no monthly report, no Cyber Essentials work.
£35 a computer is what is left when you take the people out and leave the protection in. It is a real product with a thin service around it, and we would rather say that than dress it up.
Good — keep them. QuantumCare works alongside your IT provider, not instead of them. They keep the business running; we keep it secure.
Most are relieved. Security is the part of the job they are least equipped for and most exposed on.
Antivirus is one control, and it's the one attackers plan around. It waits to recognise something it has seen before.
What it doesn't do is have a human watching. It doesn't patch the programs Windows Update ignores, block the malicious website before you reach it, join up signals across your system, or wake anybody up at 3am when something looks wrong on your machine. Those four things are what you are buying here.
There's a saving in this too. What we install takes over the antivirus job as well, so you don't need a separate paid antivirus subscription on top — whatever you renew every year, you can stop renewing. It won't cover the whole £35, but it comes off it. Don't cancel anything until we've confirmed you're covered, and we'll tell you when that is.
Neither had any of our clients, until the ones who did.
The businesses that get hit aren't targeted for being interesting — they're targeted for being reachable. The question isn't whether you've been unlucky yet.
Nobody chose you. Attacks are automated, run at scale, by organisations measuring their return on investment.
Smaller businesses get hit precisely because they're reachable and under-defended. You're not too small to be a target — you're the right size to be an easy one.
Then you leave. Rolling monthly means 30 days' notice and no penalty.
There is no minimum term on this tier at all, and nothing to pay upfront, so the most you can ever be out of pocket is a month you've already had.
No. Nobody credible can promise that — and you should be wary of anyone who does.
What we do commit to is fast action: quick detection, rapid containment, and telling you straight away and in plain English when something has happened.
The goal is simple — fewer incidents, smaller impact, faster recovery.
James Batt. Every conversation, every time you pick up the phone. Not an account manager, not a rota, and not somebody who needs your setup explained to them again.
The advice and the relationship are one person, deliberately. That is what buys you someone who knows your systems rather than someone reading a ticket.
The protection behind it is not one person. Monitoring, detection and containment run around the clock through a dedicated security operations centre, on enterprise security tooling. None of that waits for anyone here to be at a desk.
You get a named, accountable person sitting on top of infrastructure that never sleeps
Your protection carries on exactly as normal. Monitoring, detection, isolation and containment are handled by the security operations centre, twenty-four hours a day, every day of the year. A compromised machine gets shut off at 3am on a bank holiday without anyone here being involved.
I take planned leave a few times a year and you'll know well ahead. Routine questions get answered within two working days rather than the same day. Anything security-critical reaches me wherever I am.
It is a fair question to ask of any small provider, and you should ask it of anyone you are considering.
No. Business Pro is capped at twenty clients because that package includes our time every month — the leadership, the quarterly reviews, the policy work — and that does not scale to hundreds of businesses.
Sole Trader is deliberately built to run properly without that constraint, so there is no cap and no waiting list.
Possibly, and we'd rather say so than imply otherwise. Competitor exclusivity is a Business Pro promise, and it only works because that package is capped at twenty clients. Sole Trader is uncapped, so we cannot make the same commitment.
What we do commit to is that nothing about your business — your systems, your data, your weak points — is ever discussed with another client, whoever they are.
If exclusivity genuinely matters in your market, that is a Business Pro conversation, and we'll have it honestly with you.
No. We work alongside them. They keep the business running, we keep it secure, and we'll coordinate directly with them so nothing falls between the two of us.
If you'd rather we handled IT support as well, ask — but it isn't part of QuantumCare.
No — that is IT support, and QuantumCare is a cyber security service on every tier. We don't fix printers, set up laptops, recover forgotten passwords or investigate why something is running slowly.
What we will do is tell you clearly what needs doing and why, and talk you through it. If you want somebody to take the work off you entirely, you need an IT provider as well as us, and we'll work happily alongside whoever that is.
A Chief Information Security Officer, on call, shared between a small number of clients. You get the seniority and the judgement without the salary.
It is not part of Sole Trader, and it is not part of Micro Business either. It is the single biggest thing Business Pro adds, and it is the main reason Pro costs what it does. We'd rather tell you that plainly than let you assume it is in there.
Any Windows PC or Mac you actually work on. If it is switched on and you use it for the business, it counts, and it needs protecting.
You choose which ones to cover — there is no requirement to put every machine you own on the service. The one you do your work and your banking on is the one that matters.
Yes — £70 a month. Protection is installed on each machine, so two machines is twice the cost. This is the one place Sole Trader works out differently from Micro Business, where a laptop and a desktop for the same person count once.
If you only really use one of them for work, cover that one. We'll tell you straight whether the second is worth protecting rather than assuming it is.
Describe the item or answer the question so that site visitors who are interested get more information. You can emphasize this text with bullets, italics or bold, and add links.
Not covered, and not charged for. This tier protects computers.
No. Sole Trader works whether you use Microsoft 365, Google Workspace, or neither — everything in it runs on the computer rather than on your email account.
This is a real difference from our other packages. Micro Business and Business Pro are built around Microsoft 365 and include protection for your logins; that part is not in this tier, so the requirement disappears with it.
Rolling monthly only. £35 per computer, 30 days' notice, no penalty and no minimum term.
Micro Business and Business Pro both offer a 12-month agreement with a frozen price. At £35 the saving would be small enough that two prices would confuse more than they helped, so we don't offer one here.
No. One computer is fine, and it is a real customer rather than an exception we grumble about. There is no base fee to make it work — you pay for what you protect.
Micro Business, by contrast, starts at £206 a month whatever your size. Business Pro starts at ten accounts.
Partly, and it is worth being precise about which part.
The threat monitoring and security monitoring on your computer are identical — the same products, watching the same way, because the software costs us the same either way. The patching and the web filtering are the same too.
What Business Pro adds is everything around it: identity protection, backup, vulnerability scanning, hardening, security leadership, quarterly reviews, a policy pack, email domain protection and network device management. That is most of what you are not paying for.
No. There is no backup of any kind on this tier — not your files, not your email, not your cloud storage. It is the sharpest thing missing and we would rather you read it here than find out at the worst moment.
Microsoft and Google keep your data available. Neither keeps a spare copy for you if you delete something, get locked out, or have the account taken over. People assume otherwise all the time.
Backup is billed per person and would take a large bite out of £35, so it is left out rather than half-done. If you have nothing at the moment, an external drive you unplug — or any paid backup service — is far better than nothing, and we'll happily tell you what we would use. Proper managed backup starts at Micro Business.
You move to Micro Business. Be aware it is a step up in price, not a rounding — Micro Business starts at £206 a month, because it includes things Sole Trader deliberately doesn't: backup, hardening, vulnerability assessment, training and a monthly report.
We'll flag it before you get there rather than after. Nothing breaks the day you hire somebody — but the moment there is a second person, there is a second way in, and this tier isn't built for that.
Usually a day or two from agreement. There is very little to set up on a single computer and most of it happens in the background while you work.
Monitoring and endpoint protection go live first, so you're covered before everything else is finished.
We're remote-first, which is a large part of how we keep the price where it is. On-site visits are not included and happen only when they're genuinely needed. When one is: £240 for a short visit of up to two hours, £400 for a half day, £760 for a full day.
Travel and accommodation are added at cost, never marked up, and we agree the whole figure with you before anything is booked. Short visits are for sites within reach of us in West Sussex; further afield starts at a half day.
At £35 a month, a single visit costs more than several years of the service. We'll always tell you first whether one is genuinely necessary, and it almost never is.
Threats are monitored around the clock by a human security operations centre. Isolation and containment happen whether or not you're awake — a compromised machine gets shut off without waiting for anybody.
You'll hear from us afterwards explaining what happened and what was done about it, in plain English. There is no monthly report on this tier, so you hear from us when something happens rather than on a schedule.
No. Onboarding and deployment are included in your monthly price, and there is nothing to pay upfront.
Not on this tier. Getting a business through Cyber Essentials is real work with our name attached to the answer, and it cannot honestly be done inside £35 a month.
That is a straight no rather than a maybe, because a certificate is only worth having if the controls behind it stay in place — and on this tier nobody is checking that for you.
If a client or an insurer is asking you for Cyber Essentials, that is a Micro Business conversation and we'll have it honestly with you. It is included there.
Yes. QuantumCare isn't insurance and doesn't replace it — the two do different jobs. Insurance pays out after something goes wrong. QuantumCare is there to stop it going wrong in the first place.
Be careful here, though. Most cyber policies now require multi-factor authentication, endpoint protection, patching, backups and staff training. This tier gives you the endpoint protection, the patching and annual training — it does not give you backup, and nobody here is putting together the evidence for your insurer's questionnaire.
If you declare controls you don't actually have, a claim can be refused. So check what your policy asks for before you answer it, and if the form asks about backups, make sure your answer is true. Micro Business is where we take that work on.
We aren't insurance brokers and can't advise on cover. Speak to your broker about what's right for your business.
Email domain protection isn't included as standard, so the number of domains you have doesn't change your base price. It is £30 per domain per month if you want it, and you can protect one domain without protecting the others
It is worth understanding what it does. Without it, a criminal can send email that looks like it came from your address — to your clients, asking them to pay a different bank account. Old trading names and campaign domains can be spoofed just as easily as your main one.
Most one-person businesses don't need this. If you invoice by email from your own domain, ask, and we'll tell you honestly whether yours does.
Beyond not being hacked, here is what it buys somebody working on their own.
At the moment the only thing between a problem and your business is you spotting it, in between doing the actual work. From day one somebody else is watching around the clock, and watching is their whole job rather than the thing they’ll get to on Sunday night.
Fewer incidents, caught earlier, contained faster. The difference between losing an afternoon and losing a fortnight is almost always how quickly somebody noticed — and when you are the whole business, a fortnight off is a fortnight unpaid.
Agencies and larger clients increasingly send a short security questionnaire before they’ll put you on the books. This won’t get you a Cyber Essentials certificate — that’s Micro Business, and we’d rather say so — but it does mean you can answer yes, truthfully, on threat protection, patching and web filtering.
Updates get applied, dodgy websites get blocked, and the antivirus subscription you renew every year goes away. It becomes one line on your bank statement instead of a job you keep meaning to get round to.

The next step
You don’t have to decide anything on the call. We look at what you have, tell you what’s exposed, and you keep the findings either way. If we’re not the right fit for you, we’ll say so — that is a useful answer too.
or reach James directly
30 minutes · No obligation · No sales script
QuantumCare Business Pro is capped at twenty clients. If we’re full, or if you’d be sitting alongside a direct competitor, we’ll tell you that on the first call rather than the third.
James Batt · CISSP, C|CISO Founder, Systems Secure Ltd

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Systems Secure Ltd
6 The Meadow, Copthorne, West Sussex. RH10 3RG
07702 896 910
Company Registration: 7295869
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