The Boeing 777 aircraft landed safely at the airport, as per reports.
Sources said the flight (AI-129) departed from Mumbai international airport at 8:36 am and returned to the city at around 11:30 am.
Air India, in a statement, said, "The flight operating from Mumbai to London made an air-return to Mumbai due to a technical issue. The aircraft landed safely at Mumbai for precautionary checks."
The Tata Group-owned airline said that it had made alternative arrangements to fly the passengers to their destination.
Air India added that it had offered full refunds on cancellation and complimentary rescheduling to another date, if so desired by passengers.