Politics, Geopolitics and Inflation: Markets Enter a More Fragile Phase

Markets head into this week facing a combination of political instability, geopolitical tension and sticky inflation pressures, all at a time where investors are already questioning the outlook for growth and interest rates heading into the second half of the year.

Over the last few months, markets have largely been driven by central bank expectations and geopolitical headlines, but what we are now starting to see is these themes increasingly colliding. Political uncertainty is beginning to matter more again, particularly in the UK, while ongoing tensions in the Middle East continue to keep energy markets sensitive and inflation risks elevated globally.

For FX markets, this creates a much more complicated backdrop. Sterling, the Euro and the US Dollar are no longer simply reacting to economic data in isolation. Instead, currencies are being pulled in multiple directions at once by interest-rate expectations, political developments and broader risk sentiment.

Labour Losses Raise Questions Around UK Political Stability

The UK local and devolved elections delivered a sharp rebuke to Labour less than two years after its landslide general election victory. Across England, Labour lost more than a thousand councillors on a net basis, surrendering control of a number of councils, including several long-held strongholds in the North and Midlands.

One of the clearest trends from the elections was the continued fragmentation of the political landscape. Reform UK made significant gains across England, in some areas overtaking both Labour and the Conservatives as the main opposition force. In Wales, Labour lost control of the Senedd for the first time in modern political history, while in Scotland the SNP remains dominant and Reform UK continues to gain traction in several unionist areas.

These results follow growing pressure on Keir Starmer after Labour’s poor performance in the Gorton and Denton by-election earlier this year, where the Greens captured what had previously been considered a safe Labour seat.

Politically, Starmer has accepted responsibility for the results but ruled out any suggestion of resignation, instead promising a reset in strategy. At this stage, there is no formal leadership challenge underway, and he still appears to retain backing from much of the cabinet. However, there is clearly growing unease within parts of the parliamentary party, particularly among MPs in traditional Labour heartlands.

For Sterling, the immediate impact is not dramatic, but it does add another layer of political uncertainty at a time when markets are already cautious about the UK’s economic outlook. Local elections rarely trigger sustained moves in GBP on their own, but the scale of Labour’s losses and the growing shift towards smaller parties may reinforce investor concerns around long-term political stability and the government’s ability to implement difficult fiscal or structural reforms.

In practical terms, this likely caps Sterling rallies in the short term rather than causing outright panic selling. The bigger risk for GBP would come if internal Labour tensions accelerate into a genuine leadership battle or meaningful shift in economic policy direction later in the year.

Middle East Tensions Continue to Hang Over Markets

Alongside UK politics, the U.S.–Iran situation remains one of the key macro risks for markets globally.

While the ceasefire around the Strait of Hormuz technically remains in place, it continues to look increasingly fragile. Recent days have seen intermittent exchanges of fire near the Strait, alongside fresh U.S. sanctions targeting Iranian-linked networks and several Chinese entities accused of supporting Tehran’s military and missile programmes.

President Trump has continued to alternate between diplomatic optimism and aggressive rhetoric, suggesting a deal with Iran remains possible while simultaneously warning of renewed military action if talks break down.

For markets, this keeps a floor under oil prices and maintains a broader geopolitical risk premium across FX and commodities. The US Dollar continues to benefit intermittently from safe-haven demand, while higher energy prices remain a concern for Europe and the UK given their inflationary impact.

Adding another layer to the geopolitical backdrop is President Trump’s summit with President Xi later this week in Beijing. Expectations for a major breakthrough remain low, but markets will still be watching closely for any developments around trade, technology restrictions, Taiwan or Chinese support for Iran.

Even relatively small developments from this summit could influence risk sentiment and China-sensitive currencies, though the bigger market reaction would likely come from any escalation in tensions rather than progress.

Economic Data Still Matters

Although geopolitics and politics are dominating sentiment, we do still have several important economic releases this week.

Tuesday’s main event is U.S. CPI inflation data. Headline inflation is expected to rise sharply to 3.7% from 3.3%, reinforcing concerns that higher energy prices and ongoing geopolitical disruption are beginning to feed into consumer prices more aggressively.

For markets, this matters because it further complicates the Federal Reserve’s position. Sticky inflation reduces the likelihood of near-term rate cuts and could support the Dollar if the market begins pricing a longer period of higher rates.

On Wednesday, Eurozone GDP is expected to remain unrevised at 0.1%, which is unlikely to generate much market movement unless there is a meaningful surprise.

Thursday is more important from a UK perspective, with GDP expected to rise strongly to 0.6% from 0.1%. A reading of that magnitude would likely support Sterling and reinforce the recent narrative that the UK economy may be stabilising better than expected.

However, any positive reaction could easily be limited if political headlines continue to deteriorate. In the current environment, good economic data alone may not be enough to sustain GBP rallies if broader political uncertainty remains elevated.

We also have U.S. retail sales on Thursday, expected to soften to 0.6%, which could point towards slowing consumer momentum in the U.S. economy.

Final Thoughts

This week feels like another turning point for markets.

Political uncertainty in the UK is beginning to matter more for Sterling, geopolitical tensions remain elevated in the Middle East, and inflation pressures are starting to feed back into the global economic outlook.

At the same time, markets are still trying to work out where central banks go next in an environment where growth is slowing, but inflation is no longer falling comfortably back towards target.

For FX markets, this is exactly the type of environment where volatility can return quickly and unexpectedly.

Sterling may continue to find support from relatively resilient UK data, but political instability could increasingly cap upside moves. Meanwhile, the Dollar remains caught between safe-haven demand and concerns around slowing U.S. growth.

As always, in markets like this, flexibility and timing remain key.