The rule that can lose you a case you should have won
You do the work, you invoice it, they do not pay. You take them to court. And their solicitor looks at your website, notices your company number is not on it, and asks the court to dismiss your claim.
That is section 83 of the Companies Act 2006, and it has nothing whatever to do with whether the money is owed.
Except that the scary version is overstated, and it matters
Half the pages on the internet describing section 83 make it sound automatic. It is not, and the difference is worth understanding rather than being frightened by. Read the section itself and three separate things have to line up before your claim goes anywhere:
- You were in breach at the time the contract was made, not at the time you issued proceedings. Fixing your footer today does nothing about a contract signed last year, and equally, a breach that started after the contract is not caught.
- The defendant shows either that they had a claim arising out of the contract which they were unable to pursue because of your breach, or that they suffered some financial loss in connection with the contract because of it. They have to demonstrate real prejudice, not just point at the omission.
- The court is not satisfied that it would be just and equitable to let the proceedings continue anyway. The discretion sits with the judge, and it survives everything above it.
So it is a risk rather than a certainty. It is also a risk that costs ten minutes to remove entirely, which is the honest reason to bother, and a better reason than the one that gets shouted.
Two lists, and they are not the same size
This is the bit that is genuinely confusing, and getting it straight tells you what to do about documents this page never asked you about.
Your registered name goes on nearly everything. Regulation 24 lists business letters, notices, official publications, bills of exchange, promissory notes, endorsements, order forms, cheques, orders for money or goods, bills of parcels, invoices, other demands for payment, receipts, applications for a licence to trade, your websites, and then finishes with "all other forms of its business correspondence and documentation". That is a catch-all and it is worded as one.
The number, the registered office and where you are registered go on three things.Regulation 25: business letters, order forms and websites. That is the entire list. Not invoices, not receipts, not delivery notes.
Order forms are the item people miss, because an order form does not feel like a letter. It is on the short list all the same.
What about email?
The honest answer is that the regulation does not say, and anybody telling you it definitely does or definitely does not is filling a gap with confidence. Regulation 25 names business letters. Whether an email is a business letter has never been settled in the regulation itself, and the practical consensus has been to treat a real business email as one.
What is not in doubt is regulation 24, which puts your registered name on all business correspondence, and an email is plainly that. So put the full set in your signature and stop thinking about it, which is what almost everybody does anyway and costs nothing.
Sole traders: it turns on one word
Most sole traders assume none of this touches them. Many are wrong, and the test is narrower than people expect.
Part 41 of the Act applies to anybody "carrying on business in the United Kingdom under a business name". A business name is anything beyond your surname plus your forenames or initials. So:
- John Smith or J Smith: not a business name. Nothing applies.
- Smith Plumbing: a business name. It all applies.
- Smith & Sons: a business name, because Sons is not your forename.
Once you are in, section 1202 puts your own name and an address where documents can be served on your business letters, written orders for goods or services, invoices, receipts and written demands for payment. That last item matters most: a written demand for payment is exactly what you send before you sue, and section 1206 gives a sole trader the same problem section 83 gives a company.
The two rules nobody knows
Name one director and you must name them all. Regulation 26: where a business letter includes the name of a director other than in the text or as a signatory, it must disclose the name of every director. Signing a letter is fine. A name printed in the letterhead is what triggers it. Naming three of your four is the breach.
If you state a share capital it must be the paid up figure. Regulation 25(3). The number most people put on a letterhead is the issued or nominal capital off the incorporation paperwork, which is a different number wherever shares are unpaid or partly paid. Nothing requires you to state share capital anywhere, so the easy fix is to delete the line.
And the sign on the door
A company must display its registered name at any location where it carries on business, but not at a location primarily used for living accommodation. Run the business from your kitchen table and there is nothing to put on the front door.
Watch the separate rule, though. The registered name has to be displayed at the registered office and at any inspection place, and there is no living-accommodation exemption in that one. If your registered office is your home you have walked into a different regulation, which is one of the better arguments for using a service address.
Common questions
What has to go on my website?
If you are a limited company or an LLP: your registered name, the part of the UK you are registered in, your company number and your registered office address. All four, on the website rather than on one page of it, which is why almost everybody puts them in the footer. That is regulation 25 of the 2015 Regulations. If you are a sole trader with a business name, a website is oddly not on the statutory list at all, though putting your name and a service address there is still the sensible thing to do.
Do I have to put my company number on invoices?
Your registered name, yes. The number, the registered office and the place of registration are not required on an invoice: regulation 25 names business letters, order forms and websites and nothing else. Regulation 24 is the wider one and puts your registered name on invoices, receipts, demands for payment, cheques, notices and "all other forms of business correspondence and documentation". Most invoices carry the number anyway and there is no harm in it, but knowing which of the two lists a document is on tells you what to do with the next document nobody asked about.
What happens if I get it wrong?
It is a criminal offence carrying a fine, and separately there is the civil consequence in section 83 that people repeat in a frightening and slightly wrong form. Section 83 does not mean a missing company number gets your claim thrown out. Three things have to line up: you were in breach at the time the contract was made rather than at the time you sued; the defendant shows either a claim they could not pursue because of your breach or a financial loss caused by it; and the court is not satisfied it would be just and equitable to let the case continue anyway. It is a genuine risk, and it takes ten minutes to remove.
I am a sole trader. Does any of this apply to me?
Only if you trade under a business name, and the test is narrower than people expect. Trading as "John Smith" or "J Smith" is not a business name, so Part 41 does not reach you at all. Trading as "Smith Plumbing" or "Smith & Sons" is, because Plumbing and Sons are not your forenames or initials. One word on the van decides it, and once you are in, you have to put your own name and an address for service on your letters, written orders, invoices, receipts and any written demand for payment.
Do I have to put a sign up at my house?
No. Regulation 22 requires a company to display its registered name at any location where it carries on business, but it does not apply to a location primarily used for living accommodation. So a business run from home puts nothing on the front door. Note the separate rule though: regulation 21 requires the registered name to be displayed at the registered office and any inspection place, and if your registered office is your home you are back inside a different regulation. Most people solve that by using an office service address instead.
Can I name just the managing director on the letterhead?
No, and this one is genuinely all or nothing. Regulation 26: where a business letter includes the name of any director other than in the text or as a signatory, it must disclose the name of every director. Signing the letter is fine. Mentioning somebody in a sentence is fine. A name sitting in the header is what triggers it, and then all of them have to be there. Naming three of your four directors is the breach; naming none of them is not.
My letterhead says "share capital £100". Is that a problem?
Possibly, and it is the trap nobody knows about. Regulation 25(3): if you disclose an amount of share capital on your business letters, order forms or website, that disclosure must be of the paid up share capital. The figure people reach for is the issued or nominal capital off the incorporation paperwork, which is not the same thing where shares are unpaid or partly paid. Nothing anywhere requires you to state share capital at all, so the simplest fix is to take the line off.