Until 2013, airport departure gate staff inspected every traveller's luggage to ensure it met the strict rules on size and weight — and would often oblige people to pay £60 extra to check in any baggage that infringed the rules. But as part of the airline’s “Always Getting Better” campaign, both the rules and the enforcement were relaxed: a second piece of baggage is now allowed, and gate staff are far less strict about dimensions.

As a result of the struggle to fit bags in the overhead lockers, some flights are being delayed. Ryanair now says it will reverse its generous two-cabin-bag allowance unless travellers show more respect for the regulations.

Ryanair's Neil Sorahan asks passengers to stop 'bringing the body bags' on flights

Neil Sorahan, the airline’s Chief Financial Officer, told The Independent: “We’re becoming victims of our own niceness. People aren’t playing by the rules. We’re seeing very large bags coming onboard, which is leading to delays at the gate, and indeed onboard the aircraft.”

The airline currently permits one cabin bag with a maximum volume of 44 litres, plus a smaller bag of up to 14 litres onboard the aircraft.

“We’re asking our customers to stop bringing the body bags, start bringing the wheelie bags again and we’ll all be happy.

“If, however, that doesn’t happen, we’ll have to review this along with a number of different initiatives just to make sure our on-time performance isn’t impacted.”

It is possible that Ryanair is looking to emulate Wizz Air and a number of US airlines, and charge fees for larger pieces of cabin baggage.