If you want to know whether a UK seed round is priced normally, you need the actual numbers, not a description of how valuations get set. The mechanism is covered well elsewhere, and so are the definitions. This page does the other job: it gives you the 2024 ranges a UK angel checks a round against, sourced and dated, and it is honest about where the open data runs out.
Two live explainers sit underneath this one. How early-stage startup valuations are set walks through the mechanism, and pre-money vs post-money valuation explained handles the arithmetic. Read those for the how and the what. Here you get the how-much.
A benchmark is a distribution, not a target. It tells you where a round sits, not what it's worth.
What the open UK data actually shows
The strongest public read on UK valuations is the British Business Bank Small Business Equity Tracker 2025, published on 24 June 2025. It covers the full UK market for calendar 2024, and because the Bank is government-owned it is the most official source you will find. Lead on it. The latest figures are a year old by design, refreshed each summer.
Where the Bank reports, the numbers are firm. Where it doesn't, mostly at the pre-seed end, the open data thins out fast and no single source fills the gap cleanly. So treat this page as precise on seed and the venture stage, and deliberately qualitative on pre-seed. That split is not a hedge. It is the honest shape of what's published.
One more piece of context from the same release: 49% of Bank-supported deals across 2022 to 2024 were technology or IP-based, and university spinouts pulled in £1.9bn, a record 12% of all deals. The market you are pricing against leans technical.
Seed: the numbers you can rely on
For a typical UK seed round in 2024, the median was £1.68m, a record high, and seed pre-money valuation sat at about £5.6m, edging down from £5.7m the year before, both per the British Business Bank Equity Tracker 2025. Those two figures are the spine of any seed sanity-check.
The average seed round was higher, £5.74m, and that gap matters. A few outsized rounds pull the mean well above what most founders actually raise, so the average flatters the typical deal. When someone tells you the average seed is nearly £6m, they're technically right and practically misleading. The median, £1.68m, is the number that describes the round in front of you.
Pre-money is the valuation before the new money goes in; post-money is after. If that distinction isn't second nature yet, the pre-money vs post-money explainer covers it in full. The short version for benchmarking: when you compare a quoted valuation to the £5.6m seed figure, make sure you're comparing pre-money to pre-money. Mixing the two is the most common way a sane round looks expensive on paper.
Pre-seed: handled honestly
There is no clean, full-market UK pre-seed valuation you can quote with confidence. The British Business Bank doesn't break it out, and the vendor indices that do tend to capture a slice rather than the whole. A typical pre-seed company in the UK raises at a few million pre-money, but the open data behind that statement is genuinely thin. Don't anchor hard on a single figure.
The one specific public read is the SeedLegals Termometer, which has put the mean UK first round near £2.89m. Useful, but know what it does and doesn't capture: it's a single platform's deal flow, and it skews toward smaller, founder-led rounds done on standard paperwork. That's a real and informative population, not the entire market.
You may have seen a figure of roughly £3.2m, up about 31%, repeated around the pre-seed conversation. We couldn't trace it to a named primary source, so we're not putting our name to it. If you need a current pre-seed pre-money number, pull it yourself from Carta or SeedLegals on the day, and read it as directional. At this stage the price owes more to the founder, the round size and the appetite in the room than to any benchmark.
The AI effect on what you'll see
If you're looking at AI rounds, expect bigger numbers, but be careful about what bigger actually means. The British Business Bank Equity Tracker 2025 puts AI deals about 40% larger by size, with an average deal of £8.3m against £5.7m market-wide, and growth-stage AI deals at £36.3m, roughly two and a half times the wider average.
Read that as round size, not as a pre-money premium. A larger raise can reflect more ambition, more capital intensity or simply more competition for the deal, none of which is the same as the company being valued at a 40% markup per share. The pure valuation-premium estimates that float around (CB Insights at roughly 42% higher seed valuations, PitchBook at about 44% at seed) are global, vendor-sourced and cut from specific subsets, so use them for direction only and don't read them as UK figures.
Whether the heat is durable demand or froth is its own question, and we don't make the call. Is AI seed valuation a bubble? lays out both sides, and the two-tier seed market explained covers the non-AI half of the split, where prices have held closer to the old normal.
How to use a benchmark without misusing it
A benchmark is a distribution, not a target. The £5.6m seed pre-money figure is the middle of a wide spread, not the price a given company should command. Stage, sector and region all move it: a deep-tech round in Cambridge, a consumer app in Manchester and an AI tool raising in London can be priced very differently and all be reasonable.
So use the number to ask a question, not to settle one. A round sitting well outside the published range isn't wrong, but it needs a reason you can articulate: stronger traction, a hotter sector, a competitive process. A round sitting comfortably inside the range still has to clear everything else, the team, the market, the terms. The benchmark flags the outliers. It doesn't price the deal. For the full process of pressure-testing a price, the valuation sanity-check walks through it step by step.
A closing note on what this page isn't. It reports the published numbers; it doesn't tell you what to pay or whether to do a deal. These are market data, not tax law, so they carry the usual caveats: they're a year old by the time you read them, they describe ranges rather than precise truths, and the pre-seed end is thin enough that any single number deserves a raised eyebrow. Re-check the figures you lean on at the British Business Bank and at Carta or SeedLegals before you act on them, and take FCA-regulated advice before committing capital. This is general information, not financial advice.
Frequently asked questions
What is a normal seed valuation in the UK?
In 2024 the median UK seed round was about £1.68m and seed pre-money valuation about £5.6m, per the British Business Bank Small Business Equity Tracker 2025 (published 24 June 2025). The average round was higher, around £5.74m, but a few large rounds skew that mean, so the median is the more honest figure for a typical round. Confirm the latest at the British Business Bank, as the data refreshes each summer.
Are pre-seed valuations published?
Poorly. There is no clean full-market UK pre-seed valuation. The British Business Bank does not break pre-seed out, and the vendor indices that do tend to capture a slice rather than the whole market. The one public read is the SeedLegals Termometer, near a £2.89m mean first round, but it skews to smaller founder-led deals. Treat any single pre-seed figure with care and confirm the current read at Carta or SeedLegals.
Why are AI startups valued higher?
Mostly because their rounds run larger, not because each share is priced at a clean premium. The British Business Bank puts AI deals about 40% larger by size, with an average deal of £8.3m against £5.7m market-wide. The pure valuation-premium estimates, such as CB Insights at roughly 42% and PitchBook at about 44% at seed, are global and vendor-sourced, so read them as direction rather than as UK numbers.
How often do these benchmarks change?
Annually, in step with the British Business Bank Equity Tracker, which is published each summer and reports the previous calendar year. The 2025 edition came out on 24 June 2025 and covers 2024, so the figures here are the latest official UK read. This page is dated and refreshed with each release, so check the date at the top before relying on it.
Can I use these benchmarks to decide what to invest in?
No. This page is general information, not financial advice, and a benchmark is a distribution, not a target. It tells you where a round sits against the market, not whether the deal is right for you. Stage, sector and region all move the number, and a price outside the range can be perfectly reasonable with a clear reason. Confirm the current figures at the British Business Bank and take FCA-regulated advice before committing capital.