All five British Olympic and 14 of the 16 Paralympic medallists have, so far, been confirmed to compete this summer at the Sainsbury’s Anniversary Games.
In the IAAF Diamond League, Jessica Ennis will double up in both the 100m hurdles and long jump, before being joined in Saturday afternoon’s event programme by double Olympic champion Mo Farah, who will run in the 3,000m, and Olympic long jump champion Greg Rutherford.
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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.