London accounted for 19.8% of the UK’s VAT- and/or PAYE-registered businesses in March 2026, the highest share of any region, according to the Office for National Statistics. New companies are not required to use a London address, but many consider it. A UK virtual office address in London lets founders use a central address for their registered office without renting space.
Whether that is the right choice depends on where your customers are, what the business needs, and whether the address meets Companies House rules. This article looks at the numbers, the legal position and the practical trade-offs.
How much of UK business is in London?
The ONS reported that the number of businesses rose in every UK region in March 2026, the first time that had happened since 2017. London’s count reached about 553,000, or 19.8% of the total, up from 19.7% a year earlier. London also recorded the largest percentage increase of any region, at 2.6%.
The share depends on the measure. The Department for Business and Trade’s wider estimate includes unregistered businesses, and the House of Commons Library notes that just over a third of UK businesses are in London and the South East. London also has the highest business density, at 141 businesses per 1,000 resident adults.
Is London also where most new companies are formed?
London leads here too. The NatWest and Beauhurst New Startup Index, as reported by UKTech.news, found 402,000 companies registered across the UK in the first half of 2026, down 5.7% on the same period of 2025, with London accounting for more than 136,000. That works out at roughly a third of the total.
Two caveats apply. Regional counts like these generally rely on the address recorded at Companies House, so they don’t prove every one of those companies operates in London. And the active company base reached a record 5.66 million even as new incorporations slowed, so the market is crowded as well as busy.
Cost is also front of mind for founders. On 1 February 2026, Companies House increased fees for incorporation and registration documents, which is one reason people search for cheap company formation options.
Does a UK limited company need a London address?
No. GOV.UK says the registered office must be a physical UK address in the same nation the company is registered in, and it must be “appropriate”. A company registered in England and Wales can therefore use any suitable address in England or Wales. Royal Mail PO Boxes are no longer allowed. Under the Economic Crime and Corporate Transparency Act 2023, an address is appropriate if documents delivered there by hand or post would be expected to reach a person acting for the company.
Two details matter at the UK limited company formation stage. GOV.UK says you must have the address in place before you register the company, and that it will appear on the public register. Companies House has also said a company can change its registered office at any time within the same part of the UK, but previous addresses remain on the register. A home address used as a registered office can later be removed in some circumstances: GOV.UK guidance says you can apply if the address was used as a registered office, though an active company must change its registered office first. It is simpler to choose the first time carefully.
The legislation also refers to a default address that the registrar can nominate as a company’s registered office, which shows an unsuitable address can be replaced for you.
What does a London address give a new company?
Mainly proximity and perception. A central postcode on a website, letterhead or proposal can make a young company look established, and it keeps you close to London’s dense network of clients, suppliers and peers. It does not create customers by itself, and it carries no legal advantage. A company with a Manchester or Cardiff address is exactly as valid.
If your clients, staff or partners are in London, the case is stronger. If the business is run from elsewhere, a London address adds an appearance without changing how the company operates. Be honest with customers about where you actually work.
What is a virtual office in London, and how does it work?
A virtual office London service gives a company a London street address, and usually mail handling, without a lease on physical space. If the address meets the appropriate address test, the company can use it as its UK registered office address. Founders can work from home or anywhere else.
The cost logic is straightforward. London flexible workspace occupancy reached 83.8% in the six months to March, with average private office revenue up 2.1% to £174 per square foot, according to industry data. A founder who doesn’t need a desk may not want to pay for one.
How do you choose without overpaying?
Cheap company formation and a low-priced address can both be sound, but check the details before you commit. Confirm the address is a real, identifiable street address rather than a PO Box, that post is received and passed on promptly, and that deliveries can be acknowledged. Ask what happens to Companies House and HMRC letters, because missed ones can become a compliance problem. Ask any provider, BusinAssist among them, to explain in writing how its address meets the legal test.
Also check that you are not tied in unnecessarily. Companies House says there is no fee to change a registered office address, so you can move later if your needs change.
The bottom line
London holds 19.8% of UK registered businesses and about a third of new incorporations, so the draw is real. But the law doesn’t require a London address, and the right choice depends on your customers, your costs and whether the address truly meets the appropriate address test.
For many new companies, a UK virtual office address is a practical way to get a credible, compliant address without paying for space they don’t use. Check the latest rules on GOV.UK before you file anything. This article is general information, not legal advice.
