Takeaway food could become cheaper than home cooking by 2030 as robots take over preparation and deliveries are undertaken mainly by drones.

The food ordering business is booming thanks to a combination of smartphone apps, which make purchases quick and easy, and changing attitudes among millennials towards eating.

Analysts at investment bank UBS believe that the global culinary revolution could go much further, forcing the cost of takeaways down so low it will become more affordable to order food to your house than cooking at home.

The first big shift will come in the form of dedicated outlets – so-called “dark kitchens” which only serve takeaway customers and do not have the expense of running a sit-down restaurant.

Rising demand means these sites can offer a wide range of food efficiently, cutting costs by 25pc compared to a restaurant-delivered meal.