Fastest Growing UK Companies
The fastest growing UK companies by 3-year revenue compound annual growth rate (CAGR). This list is filtered to active companies with at least £1M in revenue to ensure meaningful growth figures.
This ranking identifies the fastest growing companies in the United Kingdom based on their 3-year compound annual growth rate (CAGR) in revenue. CAGR measures the average annual growth rate over a specified period, smoothing out year-to-year volatility to give a clearer picture of a company's growth trajectory.
To ensure the list reflects genuinely significant growth rather than small companies with volatile revenue, it is filtered to include only active companies reporting at least £1 million in annual revenue. This minimum threshold helps exclude very early-stage businesses where percentage growth figures can be misleadingly high.
Fast-growing UK companies span a wide range of sectors, though technology, professional services, healthcare, and renewable energy are frequently well-represented. Growth can be driven by many factors including expanding into new markets, launching new products, making acquisitions, or benefiting from favourable industry trends.
Each company in this list links to a full CompanyTrack profile where you can examine their financial history in detail, including year-on-year revenue changes, profitability trends, and balance sheet data. This allows you to assess whether growth is being achieved sustainably.
Frequently Asked Questions
What is CAGR and how is it calculated?
CAGR stands for Compound Annual Growth Rate. It is calculated by taking the ratio of the ending value to the beginning value, raising it to the power of one divided by the number of years, and subtracting one. A 3-year CAGR uses the revenue figures from the most recent and third most recent filed accounts.
Why is there a minimum revenue threshold?
The £1 million minimum revenue threshold ensures that the growth rates shown are meaningful. Very small companies can show extremely high percentage growth from a low base, which would not be directly comparable to growth achieved by larger, more established businesses.
Does high revenue growth mean a company is profitable?
Not necessarily. Revenue growth measures the increase in total income, but does not account for costs. Some fast-growing companies may be investing heavily in expansion and operating at a loss. Click through to each company's profile to see profitability data alongside revenue figures.
How reliable are the growth figures?
Growth figures are calculated from audited or independently reviewed accounts filed at Companies House. However, factors such as changes in accounting periods, acquisitions, and restructuring can affect the comparability of figures across years.