Britain is poised to bask in a heatwave dubbed the 'Mediterranean melt' - but the sizzling conditions could see temperatures as hot as Malibu or Barbados.

Britain is poised to bask in a heatwave dubbed the 'Mediterranean melt' - but the sizzling conditions could see temperatures as hot as Malibu or Barbados.

Forecasters are expecting the heat to build gradually in Britain over the coming days - and most areas will reach levels above the heatwave threshold of 25C (77F) to 28C (82F) by…