A new campaign has been launched, in an attempt to reduce bread crust-related waste.

Keep Britain Tidy workshops will demonstrate how to use leftover bread in cooking.

An estimated 1.2 billion edible bread edible bread crusts are binned each year, new research has revealed, as one in five customers chuck their leftover crusts willy nilly.

The scale of the waste is equivalent to 50m loaves of bread being thrown away in crusts alone every year and is revealed by a new campaign using chefs’ tips and recipes to show consumers how to use it to make tasty snacks and meals.

On average, a household that avoids crusts chucks out the equivalent of a full loaf of bread every month, according to new research from North London Waste Authority (NLWA), the second largest waste disposal authority in the UK.

The UK battles to reduce its annual £20bn food waste bill – bread remains one of the most wasted items at all stages of the supply chain.

According to official figures, about 10m tonnes of food is wasted annually in Britain, in homes and in the commercial sector. An estimated 44% of all bread is thrown away because people do not get around to using it in time and worry it is stale.

The NLWA has commissioned charity Keep Britain Tidy to launch a series of free “Save a Crust” workshops in north London with professional chefs demonstrating how to make snacks and meals from leftover bread. Consumers are advised to freeze crusts in a bag – to build up enough to cook with – and to make breadcrumbs with a cheese grater.

According to the NLWA’s new national research, 36% of households throw away crusts, 13% do not eat the ends of sliced loaves and 6% reject the ends of fresh loaves.

Young people are fussier about crusts, with 14% of 16 to 24-year-olds cutting their crusts off sandwiches, whereas just 2% of over-55s do so.