A growing number of UK companies are adding Bitcoin to their corporate balance sheets, following Strategy (formerly MicroStrategy) globally and homegrown pioneers on AQUIS. Here's what the strategy involves and what it costs.
Important Risk Warning
This is not financial advice. Cryptocurrency investments are highly volatile. The value of your investment can go down as well as up, and you could lose all the money you invest. Don't invest unless you're prepared to lose all the money you put in.
London — When Strategy Inc (formerly MicroStrategy) announced in 2020 that it was converting its corporate treasury into Bitcoin, most of the financial world treated it as an eccentric bet. Five years later, Strategy holds over 800,000 Bitcoin and has become one of the most-discussed corporate finance stories of the decade — for better and worse. The playbook has been replicated by dozens of companies globally, and a small but real cluster of UK-listed businesses are now running versions of the same strategy.
Whether it's right for your company — or your portfolio — depends on understanding exactly what it entails, what it's designed to solve, and what it almost certainly will not.
The classic argument for a Bitcoin treasury position goes like this: corporate cash sitting in sterling or US dollar accounts is losing purchasing power to inflation. Bitcoin is a fixed-supply asset with a verifiable cap of 21 million coins. If you believe Bitcoin will appreciate over time relative to fiat currencies, holding it instead of cash is rational — you're buying a harder form of money.
Strategy's Michael Saylor popularised this framing, and it resonated particularly with technology companies sitting on large cash reserves and nervous about inflation erosion. The strategy isn't presented as speculation; proponents present it as inflation hedging with a superior monetary asset.
The counterargument, which is equally rational: Bitcoin is extraordinarily volatile, and a corporate treasury is not a trading book. When Bitcoin dropped 70% in 2022, companies holding Bitcoin saw their balance sheets crater. Strategy survived by issuing debt and equity continuously to buy more Bitcoin, which is a strategy available to listed companies with capital market access, not to most UK SMEs.
The most prominent UK example is The Smarter Web Company (AQUIS: SWC), a British web services firm that adopted a Bitcoin treasury strategy and built a significant Bitcoin position on its balance sheet. The stock became one of the most-discussed names on the AQUIS Growth Market as Bitcoin's price rose through 2024 and 2025.
B HODL is another UK example — a company that listed after raising $20 million specifically to build a Bitcoin treasury and develop Lightning Network infrastructure. The directors described ambitions to build a global player in Bitcoin financial services, using the treasury position as collateral for a broader business.
These UK examples are small relative to the global market, but they indicate that the Bitcoin treasury structure is viable within UK corporate and listing frameworks.
For UK companies, holding Bitcoin is not tax-neutral. Bitcoin is treated as a capital asset for corporation tax purposes. Unrealised gains don't trigger a tax charge, but any disposal — including using Bitcoin to pay a supplier or converting it back to sterling — creates a taxable gain calculated against the acquisition cost.
HMRC's position is that companies holding Bitcoin for investment should account for it similarly to shares or other financial instruments. This means the mark-to-market volatility appears on the profit and loss account or balance sheet, depending on the accounting policy adopted, and any realised gains face corporation tax at the current rate (25% for most UK companies as of the 2023 reform).
A Bitcoin treasury strategy isn't just a buying decision. You need: a regulated custody solution (institutional firms like Copper, Coinbase Custody and BitGo operate in the UK), an accounting policy for fair value measurement, a board-approved treasury policy that sets parameters for the Bitcoin holding, and an auditor comfortable signing off on digital asset balances.
Most mid-sized UK companies don't have this infrastructure in place. The custodial layer alone requires FCA-registered counterparties and appropriate due diligence. It's not a weekend project.
Bitcoin treasury strategies work when Bitcoin goes up. They're painful when Bitcoin goes down, and they introduce earnings volatility that shareholders may not want. For a UK-listed company with institutional shareholders, adding Bitcoin to the balance sheet is a material decision that requires shareholder consultation and clear communication about the rationale.
For a small private company, the calculus is simpler — it's effectively an investment decision by the owners, dressed in corporate structure. Whether that's sensible depends on your views on Bitcoin and your capacity to absorb the volatility without it threatening the operating business.
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