London's public stock markets have spent years bleeding listings to New York while critics whispered about terminal decline. Now, the Financial Conduct Authority is pushing back with a radically different data strategy to prove the City's liquidity isn't actually broken.
If you look only at the traditional London Stock Exchange order book, you miss most of the action. That blind spot is exactly what the FCA wants to fix. Recently making waves recently: Why The Comeback At Boeing Changes Everything For Aviation.
The Blind Spot in British Equities
For years, corporate boardrooms and financial advisers used one primary metric to judge the health of UK equities: the central limit order book managed directly by the London Stock Exchange. It's a clean, transparent number. It's also dangerously incomplete.
Billions of pounds in shares change hands away from that main window every single day. Trades execute quietly inside investment bank internal systems, alternative trading venues, and dark pools. Because these transactions scatter across fragmented channels, public market data makes London look thin, slow, and shallow compared to Wall Street. More information regarding the matter are detailed by Investopedia.
Companies noticed. They packed their bags, skipped local listings, and headed straight for the US, citing superior liquidity as the primary excuse. Simon Walls, director of markets at the FCA, points out that the actual depth of London's liquidity is roughly three times larger than what standard headline figures indicate.
Fixing the Data Problem
To counter this perception, the regulator is launching an aggressive two-phase transparency project.
First, the FCA is starting to publish its own raw figures directly on its website, tracking the total value of trading across every single UK-listed share. This interim tracking tool—known as the Market Activity Reporter for Shares—aims to drag off-exchange transactions into the daylight immediately.
Second, the regulator is gearing up to award a major tender to build a unified consolidated tape for UK equities. Scheduled to launch over the next year and a half, this single data stream will combine pre-trade quotes and post-trade volumes from every corner of the market.
Other regions solved this decades ago. US investors relied on consolidated tape systems since the 1970s, and the European Union built its own equity framework to aggregate cross-venue trading. London lagged behind, letting fragmented reporting damage its reputation as a global financial heavyweight.
Pushback From the City
Transparency sounds great in theory. In practice, the City's incumbent players hate parts of this plan.
The London Stock Exchange has openly warned that feeding every off-exchange transaction into a single transparent stream could backfire. Their argument is simple: if you make dark pool and hidden trading too visible, you incentivize automated actors to pull liquidity away from fully lit public order books. Investment banks are also pushing back against heavy disclosure mandates for their internal systematic trading desks.
Yet the regulator refuses to back down. The core belief inside the FCA is that hidden data helps nobody except short-term pessimists. When prospective issuers believe the market lacks depth, they refuse to list. When they refuse to list, market depth genuinely shrinks. Breaking that cycle requires forcing the market to look at its own true reflection.
What This Means Moving Forward
If you manage corporate equity strategy or advise firms weighing a dual listing, stop relying solely on traditional exchange feeds. The real volume is hiding in the aggregate.
Watch how the FCA rolls out its interim trading metrics over the coming months. Evaluate the upcoming consolidated tape provider selection process early next year. The data will finally match the reality, and the narrative surrounding London's public markets might finally start to shift.
