Is this heatwave the last of the summer sun?

Today is set to be the hottest day of the year, as Brits prepare to scorch in the summer sun.

But, with thunderstorms ever present, this short intense spell of heat won’t be around for long.

So, what makes this heatwave so short? And could this be the last of the summer sun?

Senior Meteorologist Craig Snell tells ITV Weather presenter Becky Mantin what you need to know...