Public Health England has warned this week's heatwave in the South East could have a "significant effect on health".
The Met Office has declared a level 2 heat-health alert. It's activated when there is at least a 60% chance of temperatures being high enough on at least two consecutive days and into the night to have a impact on health.
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Mayor of London Sadiq Khan is backing the scheme.
A spokesperson said the lightning strikes had left the "aircraft fuelling system unavailable."
Nearly 1,000 properties have been left without power, and road users have been warned of potentially hazardous conditions.