UK equity markets opened lower as investors reacted to comments from Labour leader Andy Burnham regarding fiscal flexibility, triggering a wave of selling activity across the FTSE 100.

The remarks have reignited concerns that the party may pursue tax increases to fund public spending, prompting traders to realize capital gains ahead of any potential policy shifts.

Borrowing costs rose in tandem with the equity sell-off, reflecting a broader repricing of UK fiscal risk.

The market move underscores the sensitivity of UK assets to political rhetoric, with investors scrambling to adjust portfolios in anticipation of a tighter fiscal regime.

This selling pressure adds to existing volatility driven by geopolitical tensions in the Middle East, where threats of military action in Iran continue to weigh on risk sentiment.

The rush to bank profits highlights the fragility of the current market rally, which has been supported by hopes of a stable political environment.