Is your coffee getting stronger?

Available for over a year

Consumer group Which? has analysed the caffeine content of a number of high street chains and found they varied wildly, with Costa Coffee coming out on top - with one cappuccino having as much caffeine as four cans of Red Bull. But is coffee getting stronger? Coffee writer Celeste Wong, known as The Girl in The Cafe on social media, suggests the type of beans used could be the main driver of the change. Photo credit: Getty Images