economical

Levin says it was a win-win, as running a sandwich shop is more economical than a restaurant, and diners can still indulge in quality food without exorbitant prices.

Given letter numbers are falling, "we have to think about what is economical", she said, adding Ofcom would be publishing plans for the regulation of Royal Mail "to make sure it is sustainable".

Multiple innovations in menstrual hygiene and comfort have developed in response to stigma and waste issues in rural India, such as low tech and economical machinery allowing women to run menstrual pad-making businesses.

They hope that if the new technology proves economical, it could supply more water for cities and suburbs that are vulnerable to shortages during droughts, while avoiding the environmental drawbacks of large coastal desalination plants.

“I love having economical ways for people to be able to sing, and in our choir rehearsals, I’m definitely teaching them tricks and skills,” Delson says.