A TV-repair shop owner who has become the first person convicted in the UK for "dangerously" flying a drone says the fine and legal costs will bankrupt him.

Robert Knowles, 46, of Barrow-in-Furness, was fined £800 and ordered to pay costs of £3,500 at the Furness and District Magistrate court on Tuesday after being prosecuted by the Civil Aviation Authority (CAA). He pleaded guilty to flying a small unmanned surveillance aircraft within 50 metres of a structure – the Jubilee Bridge on the Walney channel – and flying over a nuclear installation, the BAE System submarine-testing facility.