Guinness-maker Diageo is to stop using plastic in its beer packaging from August.

The British drinks maker said it would replace plastic ring carriers and shrink wrap with cardboard-based alternatives, which would be recycleable and biodegradable.

The change will be rolled out on multipacks of Guinness, Harp, Rockshore and Smithwick’s from August 2019 in Ireland, extending to its export markets in summer 2020.

As part of the move Diageo also said it was investing €9.25m in its Belfast bottling and packaging plant, which will be the first location to produce the new packaging.

It said the change will reduce the amount of plastic waste produced by 400 tonnes per year.