London's Capital Markets in H1 2026: Reform Delivered, Recovery Pending

A measured start, not a false one

The paradox of H1 2026 is a simple one. London entered the year with its most issuer-friendly regulatory framework in a decade: reformed listing rules, a liberalised prospectus regime and the first operational private markets trading infrastructure in its history. Momentum from H2 2025 carried into the new year, a number of IPOs completed and confidence began to return. Yet as H1 closes, some may feel that momentum has softened.

It would be easy to reach for the familiar narrative of decline. That would be a mistake.

What H1 2026 actually represents is a market that has largely finished the hard work of reform, built a credible pipeline and is waiting for the wider environment to cooperate.

A useful antidote to the pessimism comes from Peel Hunt's takeover data. Since 2023, the UK has seen 154 takeover bids for companies worth more than £100 million, with an aggregate value of £165 billion. Over the same period, there have been just eleven IPOs of comparable size, worth £6 billion.

Predictably, this has prompted another round of commentary about shrinking UK public markets. Yet the much-cited "27-to-1" statistic cuts both ways.

Every large company being acquired today was once a small-cap company given the opportunity to grow in public markets. Cairn Energy floated in London in 1988 with a market capitalisation of around £25 million. Nearly four decades later, as Capricorn Energy, it is being acquired for £271 million. That is not evidence of market failure. It is evidence of a market doing precisely what it is supposed to do.

The real issue is not today's takeovers but yesterday's missing IPOs. AIM admissions slowed, Main Market IPOs slowed further and the pipeline of future mid-cap companies was never fully replenished. The consequence is now visible as established businesses are acquired and there are fewer successors moving up behind them.

There is, however, a more optimistic interpretation. Every takeover writes a cheque. Combined with FTSE 100 buybacks, that leaves a growing pool of capital chasing a surprisingly limited supply of new equity opportunities. Investor demand may not be London's primary problem. Supply increasingly looks like the bigger challenge.

For companies considering a listing, that matters. New issuers are no longer competing with dozens of simultaneous IPOs for investor attention. If recent takeover activity is a lagging indicator of the IPOs that never happened between 2021 and 2024, it may also be a leading indicator of unusually attractive conditions for those that list next.

The architecture is now in place

If H1 was defined by caution in primary markets, it was also a period of considerable regulatory ambition.

The most significant change came with the new UK prospectus regime, which took effect on 19 January 2026. Main Market issuers can now undertake large secondary fundraisings of up to 75% of their existing issued share capital without publishing a full UK prospectus, significantly reducing cost and execution risk.

AIM has also continued its reform programme. The London Stock Exchange is consulting on changes that would make the market faster, cheaper and more practical for growth companies.

The publication of AIM Notice 62 was perhaps the clearest indication yet of what AIM wants to become.

The proposed removal of mandatory working capital statements would replace an expensive verification exercise with straightforward disclosure. Proposed Capital Access Windows would allow companies to temporarily suspend trading during fundraisings, helping reduce market disruption. Changes to the reverse takeover regime would also ensure that size alone no longer triggers a full admission process unless the transaction genuinely transforms the business.

Taken together, the reforms feel less like rule changes and more like AIM finally deciding what it wants to be: a growth market with proportionate regulation, not a smaller version of the Main Market.

Meanwhile, the FCA has proposed changes to the IPO research process through Consultation Paper CP26/14. The reforms would remove the mandatory gap between publication of a prospectus and connected analyst research, reducing timetable friction and bringing London more closely into line with competing markets.

The cumulative effect is a regulatory framework that is arguably more issuer-friendly than at any point in recent memory. The regulatory case for choosing London has rarely been stronger.

PISCES: from sandbox to infrastructure

While IPOs attracted most of the headlines, the most structurally significant development of H1 may have occurred in private markets.

PISCES, the Private Intermittent Securities and Capital Exchange System, moved from concept to operation during the first quarter. QPlay became the first company to trade on a PISCES platform via JP Jenkins, while the London Stock Exchange's Private Securities Market facilitated its inaugural transaction through an innovative structure linked to Oxford Science Enterprises.

Importantly, these transactions demonstrated that liquidity and admission do not have to be the same thing. PISCES allows investors to access private company shares through exchange infrastructure without requiring the company itself to undertake a public listing.

More recently, Wayve, the UK autonomous driving company backed by Uber, Nvidia and Mercedes-Benz, announced plans for an $85 million liquidity event through the Private Securities Market.

This is not an IPO, but that is precisely the point.

If QPlay demonstrated that PISCES could function, Wayve may be the first example suggesting it can matter. For the first time, PISCES looks less like a regulatory sandbox and more like infrastructure.

For advisers and companies alike, the increasingly relevant question is no longer whether PISCES has a role, but how exchange-enabled liquidity events fit alongside traditional tender offers, secondary sales and eventual IPO plans.

A vigilant regulator

Alongside these reforms, the FCA has remained alert to risks in smaller company markets.

Primary Market Bulletin 62 highlighted a rise in manipulative activity targeting micro-cap and small-cap issuers, including fake takeover approaches and pump-and-dump fundraising schemes.

Importantly, this should not be read as an indictment of the market itself. Many of the reforms currently being pursued by the FCA, LSE and market participants are specifically designed to improve liquidity, analyst coverage and institutional participation, all factors that make markets more resilient and less susceptible to manipulation.

London's continuing international appeal

Much of the debate around UK capital markets remains focused on domestic IPO activity. Yet recent transactions highlight London's continuing international appeal.

Mining provides a useful example.

Meridian Mining recently chose London's Main Market for its admission and fundraising. Amaroq Minerals is moving from AIM to the Main Market while exiting the TSX Venture Exchange. Thor Explorations continues to use AIM as its primary public market despite maintaining a dual listing elsewhere.

These companies are not choosing London because that is where the geology sits. They are choosing London because it offers specialist investors, analyst coverage, institutional capital and a market ecosystem built over decades.

Canada will always be where much of the geology is. Increasingly, however, London remains a compelling place to access the capital required to develop it.

The make-or-break second half

London has done much of the hard work. The regulatory architecture is in place, the IPO pipeline is real and private market infrastructure is now operational.

The question for H2 is whether London has a demand problem at all.

The capital is there. The reforms are largely complete. PISCES is live. AIM is evolving. International companies continue to choose London in sectors where it has genuine strength.

If the famous "27-to-1" takeover statistic is a lagging indicator of the IPOs that never happened between 2021 and 2024, it may also be a leading indicator of the opportunity awaiting the companies that choose to list next.

H1 2026 should therefore be viewed not as a period of disappointment, but one of consolidation. The infrastructure is finally in place. The second half will tell us whether issuers are prepared to use it.