I bought TSW 3 Mega Haul pack from Humble Bundle and I already own this route. I created an account just for this.

Part of the "Rush Hour bundle", this route covers Brighton Mainline from London Victoria to Brighton with 80km of track. It does not have a branch to London Bridge, though there is a small branch to Reigate. It is a quadruple track all the way to Three Bridges, Quarry line and Slow line, Slow line called, Redhill line after a split. It includes Southern services with 377s and Gatwick Express services with 387s. You can expand both player and AI timetable with layers in a total of 1425 playable services with all layers. I really like this route, I definitely recommend getting this route even if you don't win. The scenery is good but can be improved using mods (especially Reigate).