I’m not too familiar with UK routes during the BR or during the sectors, but i would really appreciate a network southeast route with a slam door EMU. Since we’ve never had a southwestern route, i think it would be perfect for us to get a class 411, and a route out of LV or Waterloo.
A South Western route would not include London Victoria as that is a south central terminus. The 442s ran alongside slam door EMUs for a number of years and would be a great choice.