UK government borrowing costs rise as Starmer ‘fails to reassure bond markets’ – as it happened

Yields on 10- and 30-year British government bonds have risen today, as investors digest possibility of leadership challenge

UK borrowing costs rise as Starmer speech fails to dispel investor ‘jitters’

Starmer faces fight to survive as Streeting and Rayner eye leadership bids

Government bond yields are rising across the board this morning, although UK debt is leading the losses.

US and eurozone borrowing costs have also pushed higher, on concerns that the lack of progress towards ending the Iran war will lead to higher oil prices, more inflation, and higher interest rates.

Inflationary headwinds as a consequence of the conflict in the Middle East are weighing on a number of UK businesses. We have already heard from companies like Next, Asos, Sainsbury’s and WH Smith which have warned of higher costs. Now shares in Victrex have shed almost 6% today on the back of a profit warning. It anticipates weaker annual profit before tax of between £42m and £44m for fiscal 2026, falling short of estimates for £46.6m. First half underlying pre-tax also profit dropped by 18% to £19m.

The UK mid-cap polymer maker says the Iran war will push up energy and raw material inflation. The company is responding by reducing headcount by 10% to cut costs elsewhere.

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