Meet the anti-plastic warriors: the pioneers with bold solutions to waste

The environmental scourge of plastic has shot to the top of the political agenda. We talk to the creatives and campaigners behind five imaginative new ventures

Among retailers and manufacturers, they talk of "the Blue Planet effect". The BBC series, screened late last year, was the moment that many of us realised the catastrophic impact our use of plastics was having on the world's oceans. Scenes such as a hawksbill turtle snagged in a plastic sack, the albatrosses feeding their chicks plastic or the mother pilot whale grieving for her dead calf, which may have been poisoned by her contaminated milk, are impossible to unsee.

It's a crisis that affects us all, and the facts make for dispiriting reading. If nothing changes, one study suggests that by 2050 our oceans will have more plastic swimming around, by weight, than fish. It's already estimated that one third of fish caught in the Channel contain plastic; another piece of research found that "top European shellfish consumers" could potentially consume up to 11,000 pieces of microplastic a year.