The BBC must deliver an online TV catch-up service that lets users of all computers download programmes, the corporation’s regulators have said. It comes after the BBC said a download service for Mac and Linux users was not 100% definite and would depend on cost.

A spokesman for the BBC Trust said it had approved the iPlayer on the condition of “platform neutrality”, including a download service. The BBC said it “had not ruled out” a download system for non-Windows PCs.