It was hotter in parts of the UK overnight than it was in Istanbul during the day, and temperatures are expected to continue to soar this week as the country basks in a heatwave.
The mercury hit 24C (75F) at midnight last night at London City Airport - hotter than Istanbul where day temperatures did not climb higher than 21C on Sunday.
Conditions will continue tonight as the mercury will again reach 24C across London and are expected to remain until Friday.
Temperatures eventually dropped around 4am but they remained in the high teens and low 20s.
The Met Office has issued a level 3 heatwave until Wednesday,