New Delhi, July 31 -- More than 100 flights were cancelled on Wednesday, July 30, after a 20-minute air traffic control outage grounded planes and suspended take-offs across the UK.

Thousands of passengers today faced disruption at - or while trying to reach - UK airports when an air traffic control glitch led to more than 100 flights being delayed and cancelled.

Here's what happened exactly and what was the glitch that led to the chaos at UK airports:

Published by HT Digital Content Services with permission from MINT....