The UK Supplement Industry in Numbers

Ten self-contained numbers worth quoting. Each is expanded, with its source, in the sections below.

The honest answer is that it depends where you draw the line. Narrow retail vitamins sit near £568 million. Broad “dietary supplements” definitions that fold in sports nutrition and protein run several times higher.

Research firms disagree because they measure different baskets. Mintel and Statista track the tight “vitamins and minerals” shelf and land near half a billion pounds. Grand View Research, Fortune Business Insights and others measure a wider “dietary supplements” category, including sports and functional nutrition, and land in the multi-billion range. Both can be true at once. When you read a UK supplement market figure, the first question is always what it counts.

Currency is shown as published. US dollar figures are not converted, because the mix of GBP and USD estimates is itself part of the picture. Treat the broad USD “dietary supplements” numbers as directional, not precise.

Supplement use is now mainstream, not niche. Most UK adults take something, a third take something daily, and the youngest adults are the heaviest users.

The Health Food Manufacturers’ Association surveys this best. Its 2021 Health of the Nation: Lockdown Focus study, run by One Poll across 10,000 UK adults, found over 71% take a supplement and daily use had risen to nearly 20 million people, a 19% jump on 2019. Women supplement more than men. The gap between the youngest and oldest adults is large and consistent across surveys.

General health and immunity lead the reasons people give. Vitamin D sits at the centre of it, backed by a standing government recommendation and by deficiency data that keeps making the case.

The government’s autumn and winter vitamin D advice is the single biggest driver of a single supplement in the UK. It exists because deficiency is common and worse in winter. The National Diet and Nutrition Survey found 18% of adults aged 19 to 64 were deficient across 2019 to 2023, rising to 31% in the January to March window. Beyond vitamin D, motivations cluster around general health, immunity and energy.

Bricks and mortar still moves most units, but online is closing in fast, and social commerce has turned into a real supplement channel almost overnight.

Most supplements are still bought offline, with one 2024 estimate putting offline channels at 82.8% of the UK dietary supplement market. But that number is falling. Holland & Barrett’s digital sales grew 20% in the year to September 2025 and now top a fifth of its revenue. On TikTok Shop, vitamins and supplements became the biggest health and beauty category in the year to February 2026, a channel that barely existed for supplements a few years ago.

TikTok Shop category figures in the source combine US and UK reporting. Read them as a signal of channel momentum, not a clean UK-only market size.

Public filings are the most reliable numbers in this whole report. Here is what the UK’s listed and reported supplement brands actually earned.

Where market-size surveys estimate, company accounts count. Applied Nutrition listed in Liverpool colours on the London Stock Exchange in October 2024. THG’s nutrition arm, home to Myprotein, returned to growth in 2025. Huel crossed £200 million. Grenade, owned by Mondelez, had a harder year. Together these give a grounded read on brand-level scale in the UK.

Behind every own-label pot is a contract manufacturer and a rulebook. Both are growing, and the rulebook has been busy, especially around CBD.

Contract manufacturing is where new brands are born, and it is growing quickly. This is the layer Raw Creation works in every day. On the regulation side, the Food Standards Agency has spent the period working through the backlog of CBD novel food applications, setting a provisional daily intake and pruning its public list. If you are building a brand, the manufacturing capacity is there, and the compliance line is where the real work sits.

Search and social behaviour is the leading edge of the shelf. What Britain searches for this year tends to be what it buys next year.

Retailer search data is a clean read on demand because it is first-party and specific. Magnesium topped Holland & Barrett’s 2025 searches, lifted by the “sleepy girl mocktail” trend that pushed magnesium glycinate searches up 180%. Collagen, vitamin D and protein powder followed. Social platforms amplify all of it, and the youngest buyers get most of their health information there.