Forty years ago marked a landmark transformation in Britain’s financial sector known as the “Big Bang,” a comprehensive deregulation initiative that reshaped the City of London’s capital markets. The reforms dismantled longstanding restrictive practices, spurred a surge in market activity, and paved the way for widespread share ownership and economic growth.
At the time, the City operated under rigid structures: fixed commissions, a strict separation between brokers and market makers, and open outcry trading on exchange floors. These methods lagged behind the digitization and modernization efforts seen in other global financial centres. The Big Bang, driven by then-Chancellor Nigel Lawson and Stock Exchange chairman Sir Nicholas Goodison, rapidly ushered in an era of technological advancement and deregulated competition.
The effects were significant and swift. Equity commissions fell by 40% within four years, while the cost of trading government securities declined by 72% in three years. Equity turnover increased by 70% in a single year, surpassing £1 billion for the first time. These changes made share ownership more accessible to ordinary investors and supported a boom in capital raising by listed companies, including smaller firms that had previously been sidelined due to high transaction costs and low liquidity.
The reforms also underpinned a wave of privatisations that introduced millions of Britons to share ownership through public sales of companies like Rolls Royce, British Airways, and BP. This not only expanded pension and savings outcomes for ordinary people but facilitated the growth of professional services employment in accounting, law, and asset management.
Andrew Griffith, Shadow Chancellor of the Exchequer, marked the anniversary by warning against proposed increases in bank taxes expected in Chancellor John Healey’s upcoming Budget. Griffith argued that higher taxes on banks could lead to more expensive credit for businesses and consumers, undermine the City’s competitiveness, and ultimately reduce employment opportunities. He cautioned that raising costs on the financial sector risks dampening economic growth and access to capital.
Griffith also called for a “Big Bang 2,” advocating for further deregulation to build on reforms such as the Edinburgh Reforms introduced in 2022 and recent measures announced by Business Secretary Kemi Badenoch. He criticized what he described as an overly cautious regulatory environment that emerged after the 2008 financial crisis, citing a marked increase in the ratio of regulators to financial sector employees as evidence of an overly burdensome regime.
Highlighting Britain’s relative stability amid global financial uncertainties, Griffith emphasized the importance of maintaining a competitive financial centre. He referenced the 50th anniversary of Britain’s 1976 IMF bailout as a reminder of the transformative impact of later economic reforms under Margaret Thatcher’s government.
As Chancellor Healey prepares for the Budget, Griffith urged a focus on policies that support growth in the City rather than imposing additional taxes, arguing that prosperity in Britain’s financial centre ultimately benefits the broader economy.