I've known two different cases of editing differences between original broadcast and DVD releases so far, since I had taped so many seasons on VHS long before they began releasing any of the series on Region 1 DVD.
First is the opening scene of the episode where Alvin is trying to teach Nora how to line dance; the song being played on the radio/tape machine/whatever they're using is different on the DVD and the broadcast episode.
Second is the very opening scene of Elegy to Fallen Wellies; on the broadcast version there was an opening scene with the ladies practicing their dance number in the skimpy outfits in the church hall (or wherever it was supposed to be). On the DVD this scene is absent completely, and the first glimpse we have of the outfits is only of Nora and Ivy walking home discussing showing themselves to Compo.