The United Kingdom had 5.64 million small businesses at the start of 2025, 99.2% of all 5.7 million private-sector businesses in the country, according to the Department for Business and Trade’s Business Population Estimates 2025, published in October 2025. That count covers any firm with 0 to 49 employees, from single-person sole traders to firms with dozens of staff on the books, and it grew by 191,000 businesses in a single year after two years of decline. The bigger story is not the size of the count, it is who is inside it: three in four UK small businesses employ nobody but the owner.
How many small businesses are there in the UK?
The Department for Business and Trade (DBT) counted 5.64 million small businesses, defined as firms with 0 to 49 employees, operating in the UK at the start of 2025. That is 99.2% of the 5.7 million private-sector businesses on record, leaving just 46,770 businesses classed as medium (50 to 249 employees) or large (250 or more).
Almost all of that headline figure is made up of businesses with very few, or no, staff at all. The table below breaks the national count down by employee size band, using the DBT’s 2025 statistical release.
| Employee band | Businesses | Share of all UK businesses |
|---|---|---|
| No employees | 4,272,535 | 75.1% |
| 1 to 9 employees | 1,150,875 | 20.2% |
| 10 to 49 employees | 220,085 | 3.9% |
| All small businesses (0 to 49) | 5,643,495 | 99.2% |
| Medium (50 to 249) | 38,435 | 0.7% |
| Large (250 or more) | 8,335 | 0.1% |
Figure 1: Share of UK private-sector businesses by employee count. Source: Department for Business and Trade, Business Population Estimates 2025.
A UK small business, by this count, is far more likely to be a single consultant or a one-van trade than a company with a shop front and a payroll. That skew toward tiny operators is exactly why the “small business” label covers such a wide range of legal and tax situations.
What counts as a small business in the UK?
The DBT’s national statistics use a simple headcount test: any private-sector firm with 0 to 49 employees is classed as small, 50 to 249 employees as medium, and 250 or more as large. That single threshold is what produces the 5.64 million figure used throughout this article, and it is what most journalists and researchers cite for a single national number.
The reality underneath it is more layered. Companies Act reporting thresholds use turnover and balance-sheet tests instead of pure headcount, and lending, grant, and procurement schemes often apply their own size definitions that can classify a firm differently depending on the program. The employee-count test used for the population estimates is a statistical simplification, not the only legal definition of “small” a business will meet.
Figure 2: How the DBT’s economy-wide small business count is built. Source: Department for Business and Trade, Business Population Estimates 2025, methodology note.
For anyone reading a UK small business statistic, the practical takeaway is to check which definition sits behind it. A 49-employee headcount cutoff and a turnover-based test can sort the same firm into different size classes.
How has the number of UK small businesses changed since 2010?
The UK’s private-sector business population has not moved in a straight line. It rose from 4.48 million in 2010 to a pre-pandemic peak of 5.98 million in 2020, fell back to roughly 5.49 million by 2024, and then grew again to 5.7 million at the start of 2025, a 3.5% jump in a single year. Overall, the population is up 26.9% since 2010.
Figure 3: UK business population, 2010 to 2025. Source: Department for Business and Trade, Business Population Estimates, 2025 and 2024 statistical releases.
The DBT attributes most of the 2024-to-2025 rebound to 174,000 additional unregistered businesses, mainly sole traders below the VAT threshold, plus 27,000 more registered non-employing businesses. The population is growing again, but the growth is concentrated at the smallest end of the size range, not among employers adding staff.
Which industries have the most small businesses?
Construction leads every sector with 885,000 businesses, 15.8% of the UK total, ahead of professional, scientific, and technical services at 819,000 (13.7%), wholesale and retail at 547,000 (10.2%), and accommodation and food services at 233,080 (4.1%).
Figure 4: Top industry sectors by UK business count. Source: Department for Business and Trade, Business Population Estimates 2025.
Construction and professional services both run overwhelmingly on small operators, sole traders, contractors, and small partnerships rather than large firms with big head offices. If you operate in either sector, publishing a clear terms and conditions agreement is one of the fastest ways to look established to a client who is comparing several small firms at once.
Where in the UK are small businesses located?
England is home to 5.0 million of the UK’s businesses, followed by Scotland at 361,000, Wales at 194,000, and Northern Ireland at 139,000. Within England, London has more businesses than any other region, 1.04 million, followed by the South East at 877,000.
Figure 5: UK business population by nation. Source: Department for Business and Trade, Business Population Estimates 2025.
London and the South East together account for a disproportionate share of the country’s businesses relative to their population, reflecting both the concentration of professional services firms in the capital and the commuter-belt economy around it. A one-sentence takeaway: geography still concentrates UK business activity heavily around London, even as the national count grows everywhere else too.
Do UK small businesses have a website, and what legal pages do they need?
Most new UK small businesses now launch with a website rather than a shop front, which is consistent with a business population where three in four firms have no employees and run lean, digital-first operations. Our companion analysis of small business website adoption covers exactly how many operators have gone online and what still holds the rest back, and our count of how many domains are registered worldwide puts that online footprint in a global context.
A website that sells anything, collects an email address, or even just states delivery terms needs baseline legal pages regardless of how many employees the business has. For a UK small business with no in-house legal team, an online terms and conditions generator is the fastest way to get a compliant document live before the first sale, rather than treating it as paperwork to circle back to after launch.
How many UK small businesses survive long term?
93.4% of UK businesses born in 2023 were still trading one year later, according to the Office for National Statistics’ Business Demography 2024 release. By the five-year mark, survival drops sharply: only 38.4% of businesses born in 2019 were still trading in 2024.
Figure 6: Milestones for the UK business survival cohort tracked by ONS. Source: Office for National Statistics, Business Demography 2024.
Survival also varies sharply by region and sector. The South West posted the strongest five-year survival rate at 43.5%, while the West Midlands recorded the weakest at 30.6%. A one-sentence takeaway: most of the attrition in UK small business numbers happens gradually over several years, not in the first twelve months.
The Bottom Line
The number worth remembering is not just 5.64 million, it is that three in four of those businesses, 4,272,535 of them, have no employees at all. Most “small business” coverage implicitly pictures an employer with a shop front and a small team, but the actual UK small business population is dominated by sole traders and single-owner operations running lean, often from a laptop rather than a lease. If you run one of those businesses, or you build tools and content for people who do, the practical numbers to plan around are a roughly 3 in 5 chance your business is still trading five years after opening, a population that grew 3.5% in the most recent year on record, and a workforce, 16.9 million people, that is 60% of everyone employed in the UK private sector. For a comparison point outside the UK, how many small businesses operate in Australia shows a similar no-employee-majority pattern at a very different population scale.
Frequently Asked Questions
How many small businesses are there in the UK? There were 5.64 million small businesses in the UK at the start of 2025, 99.2% of all 5.7 million UK private-sector businesses, according to the Department for Business and Trade’s Business Population Estimates 2025, published October 2025.
What counts as a small business in the UK? The Department for Business and Trade classifies any business with 0 to 49 employees as small for its national statistics. Medium businesses have 50 to 249 employees and large businesses have 250 or more; only 46,770 UK businesses fall into the medium or large bands combined.
How many UK small businesses have no employees at all? 4,272,535 UK small businesses have no employees at all, 75.1% of every private-sector business in the country, mostly sole traders and single-owner companies, according to the DBT’s 2025 estimates.
What percentage of new UK businesses survive five years? 38.4% of UK businesses born in 2019 were still trading five years later in 2024, according to ONS Business Demography data. Regional five-year survival ranged from 43.5% in the South West to 30.6% in the West Midlands.
Sources and References
- Department for Business and Trade. (2025). “Business Population Estimates for the UK and Regions 2025: Statistical Release.” Published 2 October 2025. Headline count of 5.7 million private-sector businesses, 5.64 million small, as of the start of 2025.
- Department for Business and Trade. (2025). “Business Population Estimates for the UK and Regions 2025: Methodology Note.” Definitions of small, medium, and large business size bands.
- Department for Business and Trade. (2024). “Business Population Estimates for the UK and Regions 2024: Statistical Release.” 2024 business population count and year-on-year comparison figures.
- Office for National Statistics. “Business Demography 2024.” One-year survival rate for the 2023 birth cohort and five-year survival rate for the 2019 birth cohort, including regional breakdowns.
Note: All figures verified as of August 2026. UK business population figures are refreshed at least twice a year as the Department for Business and Trade and Office for National Statistics release updated data.
