After 16 months since there was last an update to this, I've decided to finally revisit this. However, I've opted to change my intended goals with this map. Due to the recent emergence of a fairly extensive (and highly excellent, I must say) timetable archive of the post-privatisation period, with plenty of timetables going back to the early 2000s, over on the
DPSimulation website have convinced me to restart this map from scratch, this time building the UK rail network in the early 2000s, with somewhat accurate timetabling to go with it. Providing I ever actually finish this project (or even make some decent progress on it), it won't be completely accurate, as there are gaps within the archives at DPSimulation (though they may expand the archives in future), as well as general Simutrans 'quirks'.
I chose to restart this map from scratch, as there were several issues with the previous map, and that, combined with my improved experience and understanding of Simutrans Extended, made it more worthwhile, in my mind, to restart this from scratch.
Anyways, enough rambling, I shall show the progress that I have currently made on the map:

Most of the South Central suburban network is in place at the minute, and the Mole Valley line to Horsham. At the minute the service pattern is like this:
From London Bridge, there is a train every 20 minutes to Beckenham Junction via Tulse Hill and Crystal Palace, and a half-hourly service to London Victoria via Crystal Palace.
And from London Victoria, there is an hourly service to Epsom Downs, and a half-hourly service to Dorking, which every hour extends to Horsham. A bit basic, but it will expand eventually.
Also, if anyone has any other timetables to contribute, then that would be greatly appreciated.