Although we do already have a South Coast line with Southern on TSW i think a SWR service from Portsmouth Harbour to London Waterloo would be very good. London Waterloo is the busiest station in England more than a quarter of a million people use the station every day. I think this would be a very good addition to the game. This would use the Class 444. The line could also branch off from Surbiton like it does and join back up at Guildford. Rhein Rhur Osten does the same thing with the line splitting in 2.