“Firstly, the use of the n-word in that instance was extremely indistinct, to the point where it might well not have been recognised by the production team. Secondly, there was another occurrence of the n-word about 10 minutes later, which was recognised by the production team and immediately edited out in accordance with the protocols on offensive language which were in place.”
Article source: https://www.huffingtonpost.co.uk/entry/bbc-breached-guidelines-baftas-n-word_uk_69d64cb2e4b069b1caa5188c