Pret has launched its ‘Make Someone Smile’ initiative, which involves 120,000 free coffees being given away.

Baristas will choose customers at random to receive a special sleeve on their takeaway coffee cup.

The chosen customers are in turn encouraged to pass the sleeve onto somebody else - a friend, a colleague, or even a complete stranger - who can redeem it for a free coffee or tea.

Pret chief executive Clive Schlee said, “We often get feedback from customers about how our shop teams have brightened up their day. Our teams love being able to make customers smile, and we hope the recipients of our special coffee sleeves enjoy being able to pass that joy onto somebody else themselves.”