Scientists have called for people to go “urban mining” after a study revealed that old cables, phone chargers and other unused electrical goods thrown away or stored in cupboards or drawers could stave off a looming shortage of copper.

The research found that in the UK there are approximately 823m unused or broken tech items hiding in “drawers of doom” containing as much as 38,449 tonnes of copper – including 627m cables – enough to provide 30% of the copper needed for the UK’s planned transition to a decarbonised electricity grid by 2030.