How many cups of tea have Britain drank so far?

Estimating the total number of cups of tea consumed in Britain is challenging, but it's widely recognized that tea is an integral part of British culture. It's estimated that the average British person drinks around 2-3 cups of tea per day. Given the population of the UK and the long-standing tradition of tea consumption, the cumulative total runs into the billions of cups over the years. However, precise figures are difficult to determine.