BBC radio is under threat from streaming giants and must reinvent itself to survive, the corporation's most senior music executive has said.

Just as BBC television faces its toughest competition from Netflix and Amazon, Spotify and other online services are a more fearsome opponent than commercial radio stations when it comes to listeners.

Bob Shennan, the BBC's director of radio and music, said: "Like so many industries, broadcasting is adapting to the impact of the internet.

"Whereas in years gone by my predecessors would today be eyeballing their competition across the UK radio sector, our competition isn't even based on this island. The new competition set is global."

Streaming services may be "the new best friend to music" but "they have set their sights on radio", he told an audience at the Radio Festival.