M&S is perceived as high quality – but also expensive. To compete with cheaper supermarkets, attract a new crowd of hungry workers, and grab a larger slice of the UK’s £20 billion hot and cold ‘grab and go’ market, the company has launched a new lunch meal deal, priced at £3.50.

E-commerce has made it simple to order almost anything at any time – but physically getting what you’ve bought isn’t always so convenient. How are retailers coping with the growing demand for same-day and one-hour delivery? And is speed the only thing that matters to shoppers?

More restaurants are pairing up with home delivery services like Uber Eats and Deliveroo so people can get restaurant-quality food without having to leave the house. Laziness and a desire for a range of healthy meals delivered at a tap help to explain the 599 million home deliveries in 2016.

Is the mealtime over? Why do people care about crockery? Will we replace cow's milk with nut milk? And should we ditch the clean eating diet? As part of our Expert Outlook 2017 series, we speak to three food and drink experts about the future of eating out, snacking and the truly balanced diet.