A rare moment of political convergence has emerged across the UK’s ideological spectrum, with figures from both the left and right directing sustained criticism at the Bank of England over its quantitative tightening programme. The debate, which has intensified in recent months, centres on whether the central bank’s strategy of actively selling gilts acquired during years of quantitative easing is inflicting unnecessary fiscal damage on the UK economy. London Hub Global analysts see this as one of the more consequential policy disputes to surface in British economic governance since the post-pandemic inflation surge.
Quantitative tightening, or QT, refers to the process by which the Bank of England reduces the size of its balance sheet by selling government bonds, or gilts, back into the market. The Bank accumulated approximately £895 billion in assets through its quantitative easing programmes, which ran across multiple phases from 2009 through to 2022. The current tightening cycle involves both passive redemptions and active gilt sales, with the Bank targeting an annual reduction of around £100 billion in its stock of assets.
The criticism from across the political spectrum focuses on the financial losses being crystallised through active gilt sales. Because the Bank purchased many of these bonds at elevated prices during periods of low interest rates, selling them now at lower market prices generates substantial losses. Those losses are indemnified by HM Treasury under an agreement established when quantitative easing began, meaning the cost falls directly on the public finances.
Estimates of the total loss to the taxpayer from the QT programme have varied, but figures in the range of £100 billion or more over the full cycle have been cited in parliamentary and academic discussions. Critics argue that the Bank’s decision to sell gilts actively, rather than simply allowing them to mature, accelerates these losses without a clear corresponding macroeconomic benefit. Proponents of the current approach maintain that reducing the balance sheet restores monetary policy flexibility and removes distortions from the gilt market.
The cross-party nature of the criticism is politically significant. Voices from the Conservative right have questioned the Bank’s accountability and the transparency of its decision-making process. From the Labour left and elements of the broader progressive policy community, the concern is more directly fiscal: that losses being locked in through active sales represent a transfer of wealth away from public services at a time of constrained government spending. We at London Hub Global note that this convergence of criticism from opposing political traditions reflects a deeper unease about the governance of independent central banks in an era of high public debt.
The Bank of England has defended its approach, arguing that the pace and method of balance sheet reduction are calibrated to avoid disrupting UK financial markets. Governor Andrew Bailey and other Monetary Policy Committee members have consistently maintained that QT operates independently of interest rate decisions, though critics dispute whether that separation holds in practice given the combined effect on borrowing conditions.
For the City of London and the broader UK financial markets, the QT debate carries direct implications. Active gilt sales increase the supply of government bonds in the market, which places upward pressure on yields. Elevated gilt yields feed through into higher borrowing costs for businesses and households, affecting everything from corporate debt issuance to mortgage rates. The FTSE 100, while dominated by internationally exposed companies that generate revenues in foreign currencies, remains sensitive to domestic credit conditions and investor sentiment toward UK sovereign risk.
London’s position as a global financial centre means that the credibility of the Bank of England’s policy framework is not a purely domestic matter. International investors holding sterling assets or considering UK market exposure monitor the QT programme closely. Any perception that political pressure is influencing the Bank’s operational decisions could affect confidence in the independence of UK monetary policy, with consequences for sterling and for the UK’s cost of capital more broadly. London Hub Global analysts forecast that if the cross-party criticism translates into formal parliamentary scrutiny or a review of the Treasury indemnity arrangement, market participants will treat this as a signal worth pricing.
UK inflation, while having retreated significantly from its 2022 peak above 11%, remains above the Bank’s 2% target. The Bank of England has held its base rate at 4.25% as of mid-2025, navigating between residual inflationary pressure and slowing economic growth. In this context, the QT programme adds a layer of monetary tightening that operates alongside, and compounds, the effect of elevated interest rates on the real economy.
The political pressure on the Bank is unlikely to produce an immediate change in policy. Central bank independence, enshrined in the Bank of England Act 1998, provides a strong institutional buffer against short-term political intervention. In our view at London Hub Global, the more consequential outcome may be a structured review of how QT losses are accounted for and communicated to the public, rather than a reversal of the programme itself.
What the current debate does establish is that quantitative tightening, long treated as a technical matter for central bankers, has entered the mainstream of UK political economy. As the Bank of England continues to reduce its balance sheet over the coming years, the scrutiny from Westminster and from London business communities will only deepen.
