Temperatures have exceeded 40C for the first time ever in the UK. The London fire bridgade has declared a 'major incident' with multiple fires across the city.
Fields and buildings are on fire in East London and there is a wildfire in Croydon in south London.
In Wellingdon in east London a wild fire has destroyed at least seven homes after sweeping through fields.
London correspondent Ellie Jay spoke to Corin Dann.
