BT Sport has been forced to abandon post-match interviews outside football grounds after a live broadcast was repeatedly interrupted by foul language from chanting Arsenal fans.
Presenter Jake Humphrey had to apologise to viewers after eight clearly audible instances of the word "fucking" were broadcast as he attempted to discuss Arsenal's 2-1 FA Cup win over Liverpool on 16 February this year.
BT launched its sport channels last year in an attempt to break Sky's stranglehold of live top-flight football.
The company's outside broadcast interviews were seen as an attempt to differentiate itself from Sky, which has broadcast live Premier League action since its launch 20 years ago.
But following the incident, which breached broadcasting regulations, BT Sport said it would no longer broadcast post-match analysis from outside grounds.
However, it will continue to do so in the run-up to matches when BT said the risk of unacceptable language was "significantly reduced" because spectators' emotions were not running so high.
However, management at BT Sport have been summoned to a meeting with media regulator Ofcom because it was the second such incident of explicit language broadcast pre-watershed in recent months.
The broadcaster will be required to "discuss its compliance arrangements" after Ofcom said it was "concerned that a similar instance of offensive language … should arise so soon after the previous compliance failure".
Former BBC presenter Humphrey told viewers after the game at Arsenal's Emirates stadium: "Apologies for some of the words being used there by the Arsenal fans. What they're chanting now is an awful lot better."
BT Sport said it undertakes a "full risk assessment" before such broadcasts, but said it had "limited options" on this occasion to cut away from the chanting because no video packages available and no other commentators or pundits were available in the stadium.
It told Ofcom that Humphrey had apologised "at the first opportunity".
The broadcaster said it still hoped to offer viewers "an engaging and fresh approach to sports broadcasting" but had in light of the incident abandoned post-match interviews outside grounds.
Ofcom said the broadcast, at around 6.25pm, was a "clear example of the most offensive language being broadcast before the watershed".
It said BT Sport had put itself in a position where there was a "strong likelihood" of offensive language from football fans.
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