Hummm...unless some others, who also buy ink by the barrel and are in direct competition with BBC/NBC and who just may wish to look into the story that their competition may well have been reporting incorrect and provably false information...then it may be worthwhile.
But sure doing nothing has worked out quite well for the wrongly accused so far so maybe they should go with that continued strategy. Ya think?
You are making the assumption that BBC radio 4 would not happily put the boot into a BBC TV 3 bought in documentary.