Costa, Greggs and Pret: which has the strongest coffee?

Podcast: Which? · Which?

Opublikowano: 2026-10-30

You might think that the only difference between drinks bought at high street coffee shops is the taste and the flavour, but our research suggests otherwise. In this episode of Which? Shorts, we bring you the results of our investigation into caffeinated drinks bought at some of the UK’s favourite coffee shops, which reveals varying caffeine levels between Caffè Nero, Costa, Greggs, Pret and Starbucks. Our results show that where you buy your coffee from could make a big difference to your daily caffeine intake, with some high street coffees containing nearly four times as...