Sizzling temperatures will only cool slightly with the latest heatwave of the year predicted to bring a barbecue weekend for millions of Brits.

The mercury is expected to climb into the low to mid-30s in eastern England today, with a possible high of 34C (93.2F), the Met Office said.

The fourth heatwave in a record-breaking year for weather has brought warm and humid conditions to many areas in recent days.

However, the hot spell is predicted to give way to increasing instability in Scotland from this afternoon, with a growing risk of thunderstorms.

Yellow weather warnings have been issued for most of Scotland today, before extending over the country and much of Northern Ireland tomorrow.

The generally high temperatures will nevertheless continue on Thursday, despite unsettled conditi

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