Ozzy and Sharon Osbourne are among more than 200 entertainment industry figures who have accused the BBC of being a national embarrassment over its Gaza coverage.

They have signed an open letter calling for a full investigation into alleged anti-Israel bias at the broadcaster.

The BBC is struggling to deal with the fallout over its controversial Gaza documentary, which featured the son of a Hamas government minister as the narrator without viewers being informed.

Tim Davie, the BBC’s director-general, admitted there were “serious flaws” in the film, Gaza: How to Survive a War Zone, when he appeared before MPs last week.

After pulling the documentary, made for the broadcaster by an independent production company, the BBC admitted that payments were made to the family of its narrator and chief protagonist, Abdullah al-Yazouri, the 14-year-old son of Dr Ayman Alyazouri, Hamas’s deputy minister for agriculture.

The letter said the documentary represents the “tip of the iceberg” of a wider issue of alleged anti-Israel bias at the broadcaster.