Train doors? Safety? hah, all that's just a smokescreen and it's about time both sides came clean about their agendas. as Eddie said, the government pays southern to run the trains, and keeps the fare revenue as recompense. the DfT want to cut the cost to them of running the service so are looking to cut away at "some of the fat" as double-manning is seen. the RMT see removal of guards as but a step toward wholesale automation and won't countenance it as it would be the thin end of the wedge. ASLEF's action is 100% political and aimed squarely at the government in the face of a resurgent labour party who are intent on renationalisation. Southern management cannot back down because they'd need the consent of the government, and that won't be forthcoming.