FTSE 100 Loses All Its 2026 Gains as Middle East Conflict Hits Shares, and UK Borrowing Costs Reach Highest Since 2008 – as It Happened

Why It Matters

The fiscal strain limits the UK government’s ability to fund additional cost‑of‑living support, while rising financing costs threaten household budgets and mortgage markets.

Key Takeaways

• FTSE 100 erases 2026 gains amid Middle East war
• UK borrowing spikes to £14bn in February, fiscal pressure rises
• Inflation surge pushes expected three quarter-point rate hikes this year
• Mortgage rates could hit 5.5‑5.75%, adding £1‑1.5k annually
• Energy bills may approach £2,000 per household annually

Pulse Analysis

The market sell‑off reflects a broader risk‑off sentiment triggered by the Middle East conflict, which has sent oil and gas prices soaring. Elevated commodity costs have reignited inflationary pressures in the UK, prompting analysts to forecast three quarter‑point Bank of England rate hikes before year‑end. This environment has already forced gilt yields to climb, raising the cost of government borrowing and squeezing the fiscal space needed for any new household energy relief.

Fiscal implications are now front‑and‑center for policymakers. The unexpected £14 billion borrowing jump in February underscores the precarious state of public finances, limiting the Chancellor’s ability to launch large‑scale support programmes without further debt accumulation. With inflation expected to stay above target and unemployment likely to rise, the Treasury faces a delicate balancing act between maintaining fiscal credibility and shielding consumers from soaring energy costs that could approach £2,000 per year.

For households and lenders, the ripple effects are tangible. Swap rates have surged, pushing mortgage pricing up to an estimated 5.5‑5.75%—a level that could add £1,000‑£1,500 to annual mortgage payments on a typical £250,000 loan. This upward pressure on borrowing costs may dampen housing demand and increase default risk, especially as disposable income erodes under higher energy bills. Stakeholders should monitor the evolving policy response, as any shift in fiscal or monetary stance will directly influence market stability and consumer resilience.