Why Your Startup Has More Than One Valuation (And Investors Know It)

12 August 2026

Why Your Startup Has More Than One Valuation (And Investors Know It)

Most founders assume their company has one true valuation, and that the job of a raise is to argue for the highest defensible version of it. It is a reasonable enough assumption if you have never sat on the other side of the table. It is also wrong, and it is wrong in a way that quietly costs founders leverage in almost every conversation about money.

Your company does not have one number. It has several, and they are not supposed to agree with each other. The figure in your pitch deck, the figure HMRC will later agree for your option scheme, the figure implied by whatever you actually raise, and the figure the market would assign if you tried to sell tomorrow are four different exercises, built for four different audiences, each with its own logic. An investor already knows this. Most founders find out the hard way, usually when a number they thought was settled turns out to mean something different to the person asking about it.

That gap - between the single number founders defend and the several numbers actually in play - is what this piece is about. Understand it and the whole conversation changes shape: less about winning an argument over a figure, more about demonstrating you understand what that figure is actually doing.

The benchmark everyone quotes probably does not exist

Founders walk into fundraising conversations anchored to a number they read somewhere - “pre-seed rounds are valued at £3.2 million now” is the kind of line that circulates constantly. It is worth knowing that this specific figure, attributed to Pitchbook and repeated near-verbatim across several UK finance blogs, could not be traced back to an original, independently verifiable source. A separate, seemingly independent dataset puts the average UK pre-seed round size at roughly £580,000 across some 1,450 deals in 2024 - a raise-size figure, not a valuation, and not obviously reconcilable with the £3.2 million claim. Neither source publishes its methodology.

This is not a minor academic quibble. The UK has nothing equivalent to a public register of private valuations. Beauhurst, Dealroom and PitchBook each aggregate what they can see, but a genuinely large share of the market never becomes visible to any of them: Sifted’s analysis of Beauhurst data found that 68 percent of UK startup fundraises go unannounced, disproportionately at the smaller end. The published “average” is therefore built from the deals companies chose to publicise - which skews toward good news - not a representative sample of what is actually happening.

The practical implication is not that valuation numbers do not matter; it is that an investor citing “the market rate” back at you is very often working from the same thin, contradictory data you are. Arriving with a defensible logic for your own number - what you need, what milestone it buys you, what stake you are prepared to sell for it - reads as more credible than arriving with a number borrowed from a blog post, because at least one of you can explain where it came from.

The maths investors expect you to get right without being asked

Beyond the benchmark problem sits a more basic one: founders and even some investors are not always precise about which number they mean when they say “valuation.” Pre-money and post-money are not interchangeable, and getting them confused is one of the more common ways founders damage a negotiation before it starts. If an investor puts in £300,000 at a £1.2 million pre-money valuation, the post-money figure is £1.5 million, and the investor owns 20 percent - £300,000 divided by £1.5 million, not by £1.2 million. Founders who quietly get this arithmetic wrong either misprice their own company or, worse, signal to the person deciding whether to back them that they have not yet internalised the mechanics of their own deal.

The number also compounds in ways that are easy to underestimate. Giving up 20 percent at pre-seed, another 20 percent at seed, and another 20 percent at Series A does not leave a founder with 40 percent - dilution stacks multiplicatively, and it shrinks faster than simple subtraction suggests. Convertible instruments that have not yet converted make this worse, because they represent dilution that will not show up cleanly on your cap table until conversion actually happens, often at the least convenient possible moment for whoever is trying to read the table.

In the UK, this is further complicated by the fact that pre-seed and seed money is usually not priced upfront at all. Most very early UK rounds run through an advance subscription agreement rather than a priced round or a US-style convertible loan note. Cash arrives now; shares are issued later, at the next priced round, typically at a discount or against a valuation cap, whichever benefits the investor more. This structure exists largely because SEIS and EIS relief - which most UK angels expect - requires a genuine equity instrument, and debt-like notes carrying interest or repayment rights do not qualify. Import a template built for US SAFEs without adapting it for UK tax rules, and you can accidentally disqualify the very relief your investors are counting on.

Your fundraising valuation and your HMRC valuation are different exercises

Here is the part almost no founder-facing valuation content mentions, and it is worth knowing before it surprises you. If you want to grant tax-advantaged employee options through the UK’s EMI scheme, you submit a form to HMRC’s Shares and Assets Valuation team to agree an Actual Market Value and an Unrestricted Market Value for your shares. That agreed figure is typically 60 to 80 percent lower than the value implied by your last priced round, because ordinary shares held by employees lack the preference rights, liquidity and control that priced-round investors negotiate for. The valuation currently takes several weeks to process and is only valid for 90 days once agreed.

In other words, the number you fought for in your pitch deck and the number HMRC will accept for your option pool are not the same figure, by design. Founders who assume they are can end up either under-pricing options unnecessarily or, more commonly, discover the gap only when an employee questions why their strike price looks nothing like the valuation mentioned in the company’s last press release. A high fundraising valuation followed by a down round can also leave existing option holders sitting on grants that look underwater - a retention and hiring risk that rarely gets discussed in valuation content aimed purely at the founder-investor relationship.

It is also worth remembering that some of this becomes semi-public regardless of what you announce. Companies House filings - confirmation statements, SH01 share allotment forms - are exactly what data providers like Beauhurst use to infer that a funding event happened at all, even when no press release exists. Your number travels further than you might expect, through channels you do not control.

The tax relief your investors are counting on is getting harder to secure

A UK-specific factor shapes valuation conversations here in a way that has no real US equivalent: the tax reliefs your investors expect materially change the risk they are pricing. Under SEIS, as the rules stood going into 2026, a qualifying company could raise a lifetime maximum of £250,000, needed gross assets under £350,000 immediately before the share issue, fewer than 25 full-time-equivalent employees, and a trading history under three years; investors in turn received 50 percent income tax relief on up to £200,000 invested per tax year, plus a capital gains exemption. EIS sits above that, with higher caps reported to be rising further from April 2026 and 30 percent income tax relief for investors - though the specific thresholds here have been reported inconsistently across sources, and at least one figure circulating online (a claimed rise in the SEIS company cap to £500,000) directly contradicts GOV.UK, British Business Bank and multiple accountancy firms, all of which state the cap remains £250,000. Treat any specific number you have read as something to verify against current GOV.UK guidance before you rely on it, because these thresholds move at Budgets and the gap between “widely repeated” and “currently true” can be wider than it looks.

What is less widely discussed is that HMRC’s own gatekeeping of these schemes has been tightening even as headline limits expand. SEIS advance assurance approval rates fell from 85 to 76 percent year-on-year even as applications rose by roughly a quarter, and EIS approval fell from 76 to 72 percent over the same period. Advance assurance is not a legal requirement, but almost every UK angel investor or syndicate expects it before committing funds, and getting it wrong on sequencing - SEIS shares must be issued before EIS shares within the same funding programme - can permanently forfeit relief for that round. Leaving this to the final fortnight of a raise is a genuine execution risk, not a formality, and an investor who senses you have not thought about it will read that as a gap in your readiness rather than a paperwork delay.

A high number today is a promise you have to keep at the next round

Accepting the highest valuation on offer is not free. It sets the bar for what you need to demonstrate before your next raise, because a flat or lower valuation next time round - a down round - typically triggers anti-dilution protections that dilute founders and early employees further, on top of whatever reputational drag comes with the round itself. Down rounds became considerably more common globally through 2023 and 2024 as 2021-era valuations reset, with US and global data from Carta and PitchBook putting somewhere between 23 and 30 percent of late-stage rounds as down or flat over that period - not a UK-specific figure, but directionally relevant, and one industry read is that the stigma has softened simply because the phenomenon became so widespread.

What often matters more than the headline figure is what sits underneath it. A liquidation preference stacked with a participating structure or an aggressive ratchet can leave founders worse off at exit than a lower valuation attached to cleaner terms, and two term sheets carrying an identical valuation can produce very different outcomes depending on board composition, veto rights and preference stacking. The UK’s later-stage cautionary tales illustrate the same principle at a larger scale: Cazoo reached unicorn status within eighteen months of its 2019 founding and listed on the NYSE via SPAC in 2021 at an $8 billion valuation, before losing over 99 percent of its value and entering administration in May 2024. Babylon Health listed via SPAC in June 2021 at a £3.3 billion valuation and was bankrupt roughly two years later, its US business - source of most of its revenue - sold for under $7 million. Deliveroo’s March 2021 listing has been described in an academic case study as one of the worst IPOs in London’s history, with the stock losing nearly a third of its value on its first trading day. None of these are pre-seed stories, but each shows the same mechanism: a valuation that outran the business underneath it eventually gets marked back down, publicly and painfully.

The market you are raising into is thinner than the headlines suggest

It is also worth being honest with yourself about market conditions rather than pricing your round as if 2021 never ended. British Business Bank data shows UK equity investment into smaller businesses fell 4 percent to £12.3 billion in 2025, having already fallen in 2024, and early-stage activity was hit hardest within that: seed-stage deal numbers fell 27 percent and venture-stage deals 13 percent, even as growth-stage investment held up. AI companies took a record 44 percent of all UK equity investment in 2025, with deal concentration rising generally - the top ten UK fundraisings accounted for roughly 23 percent of all 2025 investment, the highest share since 2020. The British Business Bank also estimates a persistent UK-US venture capital gap of around 10 percent relative to the size of each economy, wider still in sectors like life sciences.

None of this means pre-seed capital has dried up. It means the pool of attention outside a small number of favoured sectors has tightened, which raises the practical bar for what a founder needs to show before a valuation conversation even starts - clearer evidence of runway discipline, a credible route to the next milestone, and a story that survives scrutiny rather than one that simply sounds current.

The number sitting behind all of this that founders rarely mention

It would be dishonest to write about how investors actually price risk without naming the part of the picture that is not purely mechanical. Only 2 percent of UK equity investment went to all-female founder teams in 2024, while all-male teams received more than 80 percent of capital allocated - a gap that has barely moved in a decade, according to parliamentary committee findings. Only 13 percent of senior staff at UK VC firms are women, and nearly half of UK VC firms have no woman in a senior position at all. Valuation conversations are shaped by who is in the room asking the questions and who is doing the answering, not only by spreadsheets and comparable transactions, and pretending otherwise flatters nobody’s investability case. It is a reason, among several, that who you get in front of matters as much as what number you say once you are there.

What to sort out before you say a number out loud

Before your next conversation, get precise about which figure you are actually discussing - pre-money or post-money - and say so explicitly rather than letting it stay ambiguous until the term sheet arrives. Model dilution across your next two rounds, not just this one, so the number you accept today is one you can still defend when a future round prices against it. If you are relying on SEIS or EIS to bring investors in, get advance assurance moving early given how much approval rates have tightened, and check the current thresholds directly against GOV.UK rather than the first blog post that turns up. Treat any headline “average valuation” you read online with real scepticism, given how thin and contradictory the underlying data is. And keep your fundraising story and your eventual EMI conversation mentally separate - they are different numbers, agreed by different processes, for different audiences, and conflating them causes problems later that are entirely avoidable now.

None of this is really about landing on the perfect figure. It is about showing the person deciding whether to back you that you understand what your number is doing in each of the conversations it will have to survive - the raise, the cap table, the tax relief, the next round, the option grants that come after that. Get that right and the valuation stops being an argument you have to win, and becomes evidence that you were paying attention the whole time.

This article is for general information only and does not constitute financial, investment, tax, or legal advice. The Startup Foundry is not a regulated financial adviser. You should seek independent professional advice before making any financial, investment, or legal decisions.