Johnnie Balfour farms a 300-strong herd of Aberdeen Angus - and is planning to expand operations.

Cattle are notoriously the most planet-warming, methane-emitting of all the farmed animals.

But Johnnie's business, near Glenrothes in Fife, is rated as carbon negative – which means it removes more carbon dioxide from the atmosphere than it emits.

His grazing is efficient and emissions from the livestock are offset by trees, soils and grass on the land.

Unusually, Johnnie's herd lives outdoors all-year-round through a process called mob grazing - where the cattle are shifted onto a fresh piece of grass every day.