The BBC committed a "significant breach" of broadcasting rules by failing to disclose that the presenter of a programme about the Gaza situation was the offspring of a Hamas representative, as determined by British broadcasting authority Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, saying there had been "a major oversight in relation to factual correctness".
Ofcom has instructed the broadcaster to transmit a prime-time announcement about its decisions.
"Given this constitutes a serious breach of our rules, we are instructing the corporation to broadcast a announcement of our findings against it on the BBC's second channel at 9pm, with a timing to be finalised," the regulator stated.
'Risk to Damage Trust'
The regulator's announcement declared: "The inquiry we conducted found that the documentary's failure to disclose that the voice's male guardian occupied a post in the Hamas-run authority was significantly deceptive.
"Consequently that the viewers did not have vital facts which may have been very significant to their judgment of the presenter and the information he shared.
"Credibility is at the core of the relationship between a broadcaster and its viewers, especially for a public service broadcaster such as the public broadcaster.
"This error had the possibility to damage the significantly high levels of confidence that audiences would have placed in a factual film from the broadcaster about the Gaza conflict."
The documentary was pulled from the BBC's streaming service in last February after the narrator's familial connections emerged, and in the month of July an corporation's own inquiry found it breached the organization's content policies on accuracy.
A corporation official commented: "The Ofcom ruling is in accordance with the findings of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on accuracy, which corresponds to clause 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with Ofcom's decision in its entirety. We will follow the directive as soon as the schedule and wording are confirmed."
