Another one bites the dust. Anthropic, the British-born artificial intelligence powerhouse valued at over £60 billion, has confirmed it will list on the US stock market, dealing a fresh blow to London’s ambitions as a tech finance hub. The decision, announced this morning, underscores a troubling pattern: the City’s high costs, heavy regulatory burdens, and a chronic lack of deep-pocketed growth capital continue to drive our most promising firms across the Atlantic.
For those of us who have spent decades watching capital flows, this is a familiar tune. UK pension funds, hamstrung by solvency rules and risk aversion, rarely back high-growth tech. Meanwhile, US exchanges offer deeper liquidity, more generous valuations, and a culture that doesn’t punish founders for thinking big. The result? A brain drain of leadership and, now, a capital drain of IPOs.
Let’s talk about the numbers. Anthropic’s move will see its shares trade on the Nasdaq, where peers like Nvidia trade at 50 times forward earnings. Contrast that with the FTSE 100’s paltry 11 times. The message is clear: London cannot compete for the innovation premium. And without that premium, the City risks becoming a graveyard for old economy stocks.
Critics will argue that the US market is more lenient on dual-class share structures, allowing founders to retain control. True. But the deeper issue is a cultural one. British investors are too often obsessed with short-term dividends rather than long-term disruption. Anthropic’s founders want patient capital; Wall Street offers it. London offers a quarterly ear-bashing from fund managers who ‘don’t understand AI’.
The Treasury will wring its hands and promise reforms. But we have heard it all before. The ‘Edinburgh Reforms’, the ‘UK Listings Review’ – all sound and fury, signifying nothing. Meanwhile, the cost of capital remains higher here, partly due to gilt yields that reflect our stubborn inflation. At 4.2 per cent, the 10-year yield still haunts the Exchequer. Every one percentage point adds £15 billion to debt servicing costs. That is money not spent on R&D tax credits or scaling infrastructure.
There is also the issue of capital flight. British investors have been piling into US equities for years, chasing returns. Data from the ONS shows UK residents now hold over £1.5 trillion in foreign equities, up 30 per cent since 2019. The lamentable truth is that London’s own investors are voting with their feet. Why would Anthropic stay when the very institutions that should back them are busy buying S&P 500 ETFs?
Some will say this is just one company. It is not. It is the canary in the coal mine. Arm, Darktrace, and now Anthropic. Each high-profile defection erodes London’s reputation as a credible venue for tech listings. The feedback loop is vicious: fewer IPOs mean less analyst coverage, less liquidity, and even fewer listings. We are approaching a tipping point where London becomes irrelevant for tech, period.
What can be done? First, the Government must tackle inflation decisively. That means the Bank of England holding rates higher for longer, even if it hurts. Sound money is the bedrock of a credible market. Second, reform pension fund rules to allow more investment in unlisted equities. The British Business Bank is a start, but it is a pittance compared to US venture capital. Third, simplify the prospectus rules. The current regime is a lawyers’ banquet.
But let us be realistic. Even with reforms, the gravitational pull of the US market is immense. Dollar-denominated, English-speaking, with a legal system that respects contracts and a culture that celebrates risk. Britain cannot beat that by changing a few rules. We need a fundamental rethinking of what the City offers. Perhaps a specialised ‘London Tech Exchange’ with lighter regulation for high-growth firms. Or a sovereign wealth fund that co-invests in big tech.
Until then, we will watch more unicorns gallop west. Anthropic is just the latest. The market has spoken, and the message is not comfortable. The City must adapt or die.
