Don't really bother reading this post unless your the person I'm replying to because it's pretty dull. Do you think Cobham is deserving of a place on the fast lines between Waterloo and surbiton? Note how services using the slow lines between the above mentioned stations are part of the suburban network in question for DOO which eventually branch off at Raynes park, New Malden, Surbiton or continue down the slow mainline. Trains down to haslemere use the fast lines between Waterloo and surbiton (I don't know where they do join onto the slow lines if they do). If it has to be so black and white the way your putting it, where the edge of London has to be where suburban stops they should have a 701 shuttling down the Surbiton then have people change onto a 450 to take them down the Cobham line. Cobham is suburban because it's near enough. Only about 20 miles from central London whereas haslemere is closer to 40 or so miles from the same point. That is why one can be considered suburban and the other can't. If haslemere was considered suburban, you'd probably be arguing for Portsmouth the be suburban. There has to be a boundary somewhere and as said before, Cobham is close enough it can afford to use the slow lines down from Waterloo whereas haslemere is further to the point it uses the fast lines. Without trying to sound passive aggressive, or sound like I'm devaluing your opinion, need any more explanation into what I see as a fairly obvious matter? It's the same reason services as far as Watford, though not actually in London, would be considered suburban but not say Milton Keynes or Bletchley I doubt people of haslemere would tolerate their train calling at vauxhall, Clapham junction, Earlsfield, wimbledon, Surbiton, Esher, hersham, Walton on Thames, weybridge, byfleet new haw, west byfleet, Woking, worpleson, Guildford, farncombe, godalming, Milford,witley,haslemere... Just get on Google maps, look at the difference between the two and your point gets answered pretty quickly.