BBC News Published image captionA three-month project has started following a trial last year Drones are being used to carry Covid-19 samples and test kits in some parts of Argyll and Bute - in what has been described as a UK first. Following a trial last year, the project has been expanded, with medical cargo now being carried up to 40 miles (64km). Flights from Mull, Clachan-Seil and Lochgilphead to Lorn and the Islands Hospital in Oban have been authorised. NHS staff will be able to request drone deliveries. The drones can carry a payload of up to 3kg (6.6lbs) and cover distances faster than they can be by road. Some of the road journeys also involve a ferry crossing.