Mid-air emergency declared on BA flight from Gatwick forcing it to turn back after reports of 'cracked window'

A British Airways plane prepares to take off from Gatwick airport, south London - (AFP/Getty)

A British Airways flight was forced to turn back to London Gatwick after declaring a mid-air emergency following reports of a cracked window.

Flight BA2660 was heading to Faro, Portugal, on Tuesday morning when the Airbus A321-231 abandoned its journey and returned to the UK.