The BBC is fighting against American streaming giants with "one hand tied behind its back", Lord Hall will say, as he as he warns of a future of television without British shows.

Lord Hall, the director-general, will use a speech to the Royal Television Society to call for a levelling of the playing field between UK public service broadcasters, subject to careful regulation, and the likes of Amazon and Netflix.

In a speech outlining plans to tackle the “Big Shift” in the media industry in an age of online streaming, he will warn that “one set of rules applies to UK companies, and barely any apply to the new giants”, saying programmes in years to come “won’t necessarily be British content unless we get the future right”.

In particular, he will lay out a five-point proposal to keep up with the new media landscape, promising more investment in young people and “high quality content”, a constant reinvention of its “services”, continued push-back against fake news and spending more money outside London to better reflect British life.

“We cannot allow any further narrowing of distinctive British content, or its crowding out by better and better-funded overseas competitors,” he will state on Tuesday.