The controversial attraction has sparked a row on Thorpe Park's Facebook page, with one user posting:
I have psychosis, I'm not dangerous, and have never run after someone with a chainsaw.
Stuff like this genuinely contributes to an atmosphere in which people with mental illness suffer discrimination and violence.
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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.