The pound has fallen sharply against the dollar and euro as investors reassess UK political risk and the trajectory of policy

 

Sterling weakened against the dollar, the euro and a basket of major currencies on Monday, extending losses sustained in the wake of last week's local elections, as foreign exchange markets responded to deepening uncertainty about the future of the Labour government and the conduct of UK economic policy.

The pound traded near a multi-month low against the dollar in the European session, while sterling-euro slipped to its weakest level in several weeks. The trade-weighted sterling index, which measures the currency against a basket of trading partners, fell to its lowest reading of the year, according to data compiled by market vendors and circulated by foreign exchange strategists.

Foreign exchange analysts attributed the move to a combination of political risk, weaker UK economic data and a marginal shift in expectations for the path of UK interest rates. Several strategists cautioned, however, that sterling's medium-term trajectory will depend on whether the immediate political pressure inside the Labour Party translates into a more sustained change of direction.

Background

Sterling has historically been sensitive to UK political events, and the past decade has provided several reminders of the way in which Westminster politics can affect the Exchange Rate. From the post-referendum sell-off of 2016 to the gilt market crisis of 2022, foreign exchange markets have repeatedly demanded a risk premium during periods of political uncertainty.

In the early months of the current government, sterling enjoyed a period of relative stability, supported by a Bank of England that was widely seen as cautious in its rate-cutting cycle and by improving expectations for UK growth. That stability has been eroded over recent months by a combination of weaker activity data, persistent services Inflation and a deteriorating fiscal outlook.

The latest political pressure on the Prime Minister has provided an immediate trigger for a re-rating of UK political risk. Investors are now reportedly weighing the possibility of a change of Leadership, a shift in fiscal priorities or a recalibration of the country's relationship with key trading partners.

The trade-weighted sterling index has, over the past three years, traded within a relatively wide range that reflects the alternating influence of Monetary Policy expectations, fiscal developments and idiosyncratic political events. Foreign exchange strategists have long observed that sterling tends to behave as a higher-Beta currency, with sharper moves than its peers during periods of stress and risk-on rallies, in part because of the openness of the UK economy and the structure of its financial sector.

Significant attention has also been paid to the structure of foreign exchange positioning. According to commitment of traders data and reports from major prime Brokers, speculative positioning in sterling had been broadly balanced ahead of the current episode, leaving the currency particularly exposed to a one-way move in either direction. The recent sell-off has shifted positioning toward the short side, although not to extremes.

Latest developments

The sharpest moves in sterling occurred during European trading hours on Monday, with the currency selling off in response to news of the resignation of a junior minister and to reports of further signatures on a letter calling for a Labour leadership contest. Volumes in sterling foreign exchange Options rose, and implied Volatility for short-dated contracts moved higher, reflecting Demand for protection against further price moves.

Cross-currency trades have also reacted. Sterling has weakened against the Swiss franc and the Japanese yen, which have benefited from their traditional role as havens during periods of risk aversion. Sterling-euro, often seen as the cleanest measure of UK-specific risk, has been particularly volatile.

Traders reported that overseas accounts had been the most active sellers of the pound, while domestic investors had been more cautious. The shift may, according to some strategists, reflect a broader reassessment of UK Assets among international portfolio managers, although they cautioned that such conclusions are difficult to draw from a few days of trading.

Traders at major foreign exchange dealers reported that Liquidity in sterling pairs has thinned during certain trading hours, particularly during the overlap between London and New York sessions. The reduced liquidity has amplified intraday moves and contributed to wider bid-offer spreads in spot, forward and options markets.

Corporate treasurers in the UK have been actively recalibrating their currency hedging strategies. Several large companies with significant Import exposure have reportedly extended the tenor of their hedges, while exporters have considered taking advantage of the weaker pound to lock in forward conversion at favourable levels.

Market reaction

Strategists at major banks were divided on the implications. Some argued that sterling was now offering attractive value, particularly against the dollar, and that any stabilisation of the political situation could prompt a sharp rebound. Others argued that the currency was likely to remain under pressure for as long as questions about leadership and Fiscal Policy persisted.

Equity investors have responded selectively. Companies with significant international revenues have benefited at the Margin from the weaker pound, while domestically focused stocks have come under pressure. The FTSE 250 has underperformed the FTSE 100, reflecting the differing currency sensitivities of the two indices.

Bond markets have also been an important reference point. The fact that gilt yields have risen at the same time as sterling has weakened has been highlighted by several strategists as evidence that the move reflects political risk rather than a straightforward shift in Interest Rate expectations.

Options market data has been a particularly informative window into investor sentiment. Risk reversals, which measure the relative cost of options protecting against currency appreciation versus Depreciation, have moved further in favour of downside protection. Implied volatilities at the front end of the curve have spiked, suggesting that Market Participants expect continued near-term turbulence.

Political context

The political backdrop for sterling has shifted markedly over the past week. Sir Keir Starmer has insisted that he will remain in office, but the resignation of a junior minister and the growing number of MPs reportedly willing to sign a letter calling for a leadership contest have eroded confidence in the stability of the government.

Officials are expected to use the coming days to demonstrate continuity, with a planned cabinet reshuffle and a series of policy announcements designed to reassert authority. Whether these efforts will be sufficient to reassure foreign exchange markets remains to be seen.

The Chancellor's office has declined to comment directly on currency moves, in line with longstanding Treasury practice. Officials have, however, reiterated that the government's fiscal rules remain in force and that preparations for the autumn Budget are proceeding.

Wider context

Sterling's move has occurred against a backdrop of broader dollar strength and ongoing volatility in foreign exchange markets. The dollar has been supported by relatively resilient US economic data and by expectations that the Federal Reserve may move more cautiously than previously anticipated in adjusting interest rates. At the same time, the euro has been weighed down by political uncertainty in several European member states.

Currency markets have also been reacting to renewed geopolitical tension, including the fragile US-Iran ceasefire and ongoing concerns about energy Supply through the Strait of Hormuz. While these factors affect all currencies, sterling's particular exposure to UK political risk has placed it among the more volatile performers.

Emerging market currencies have, by contrast, been relatively stable, supported by improving terms of trade and a more cautious tone from major central banks. This dynamic has unsettled some long-standing assumptions about the relative volatility of developed and emerging market foreign exchange.

The current sterling move has unfolded in a global foreign exchange environment shaped by the divergent paths of major central banks, ongoing geopolitical disruption and shifting cross-border Capital flows. Sterling's particular sensitivity to UK political events has been amplified by the relatively concentrated nature of foreign holdings of UK assets and by the elevated importance of London as a financial centre for the international management of currency risk.

Analyst commentary

Foreign exchange strategists at several major banks have published notes outlining scenarios for sterling over the coming weeks. A baseline view among many is that the currency will trade within recent ranges, with the risk skewed to the downside in the event of further political disruption. Some have indicated that they would consider sterling oversold should the Labour leadership question be resolved without a contested change of premiership.

Others have pointed to longer-term factors that may weigh on the currency regardless of the immediate political outcome. These include the UK's current account position, the structural shift in trade patterns since Brexit, and the relative competitiveness of the UK Service Sector.

Investors appeared to react in particular to the divergence between UK and US monetary policy. Should the Bank of England be perceived as constrained from cutting rates further by sterling weakness, this could reinforce a vicious circle in which fragile activity meets sticky inflation.

Strategists have offered varied scenarios for the pound's near-term path. A baseline view sees sterling stabilising at current levels if political tensions subside and if upcoming UK economic data is broadly in line with expectations. A more pessimistic scenario contemplates further weakness if a leadership contest is triggered or if the autumn Budget is delayed. A more optimistic scenario envisions a relief rally if the political situation is resolved decisively and fiscal credibility is reasserted.

Implications

A persistently weaker pound has mixed implications for the UK economy. On the one hand, it can boost the competitiveness of exporters and lift sterling-denominated Earnings for multinational companies. On the other hand, it can add to inflationary pressures by raising the cost of imports, particularly energy and food.

For households, a weaker pound feeds through with a lag into the cost of imported consumer goods. Combined with elevated services inflation, this could complicate the Bank of England's task at upcoming policy meetings. Officials are expected to weigh the relative weight of growth and inflation considerations in deciding the timing of any further policy adjustments.

Risks to watch

Among the most important risks for sterling in the coming days are further political developments in Westminster, the release of UK inflation and activity data, and any signals from the Bank of England about its policy intentions. Market participants may be watching for signs that political pressure could affect institutional independence or alter fiscal commitments.

Beyond the immediate horizon, sterling's trajectory will also depend on global factors, including US monetary policy, energy markets and the broader pattern of capital flows. A sharper dollar appreciation, for example, could compound any UK-specific pressure on the pound.

Outlook

Sterling's near-term direction is likely to be shaped, more than anything else, by the resolution of the Labour Party leadership question and the trajectory of UK fiscal policy. A clear resumption of political stability, accompanied by a credible articulation of fiscal plans, could support a recovery in the currency. Continued political turbulence, by contrast, could entrench the recent weakness.

The situation remains fluid. As one foreign exchange strategist observed on Monday evening, the pound is currently trading less on relative interest rate differentials than on questions of governance and credibility. For now, market participants appear willing to wait for clarity rather than commit decisively to either side of the trade.