Labour MP Dawn Butler has written to the BBC asking for an "urgent explanation" over the airing of a racist slur during the Bafta Film Awards on Sunday.
John Davidson, a guest with Tourette syndrome who was the inspiration behind the film I Swear, shouted out when two black actors, Delroy Lindo and Michael B Jordan, were on stage.
On Monday, a BBC spokesman said: "We apologise that this was not edited out prior to broadcast and it will now be removed from the version on BBC iPlayer."
But in a letter to the corporation, the MP for Brent Central said the BBC "could have prevented" the slur being broadcast "given the programme was aired on a two-hour delay."
Butler said the N-word "should never have been aired", describing its broadcast as "painful and unforgivable".
