[mkbb]

I think it is because if someone does something that could cause huge offence such as the shilpa race row they can edit it out preventing them from recieving complaints and ofcom investigating the channel. LF means that viewers will at least hear such an event being discussed or may even see it unfold therefore it has to be shown to avoid allegations that they are covering it up, but showing it means controversy and complaints. They couldnt win in either situation.