Jimmy Doherty puts some of the UK's most popular soft drinks under the spotlight, and uncovers the shocking truth about the levels of so-called microplastics some contain. Kate Quilton meets a Devon resident who loves to eat nettles, and Amanda Byram learns why some foods such as rhubarb and custard seem so inseparable.

Matt Tebbutt reports from Argentina on the price of sunflower seeds. Amanda Byram is in Yorkshire's rhubarb triangle, where she investigates how forced rhubarb can grow in complete darkness. Plus, Andi Oliver reveals how much added sugar goes into takeaway milkshakes.