India, March 21 -- London's Heathrow Airport will remain shut all through Friday after a fire at an electrical substation nearby caused a massive power outage. Authorities warned of ''significant disruption' over the coming days asking passengers not to use the busiest UK airport 'under any circumstances' until it reopens.

On Thursday, thousands of homes remained without power after two explosions and a fire at the substation in Hayes. A mass evacuation order was issued in west London.

Videos on social media showed emergency services at the scene while flames came up from the site overnight.

At least 37 flights ( two-way) between India and the UK will be impacted on Friday. The aircraft bound for London were either diverted or returned...