The only thing I've noticed about the BBCA TNG broadcasts is that they're edited. I think the edits are subtle and don't take anything away from the story, but when I watch and notice a line of dialogue missing here and there, it is irritating.
Really? Are you sure? It's not like TOS where in the '60s the run times were longer and had to be cut to fit into modern syndication. Though I must admit I wouldn't be totally surprised, because I have noticed some odd artifacts where the motion gets stilted and/or looks slightly sped up, which is usually a sign of a poorly done edit.