In article , Steve Naïve wrote:
I was trying to plan the best route to Kingston and have to change at
Clapham Jcn or Wimbledon.

Where are you starting from?

Kingston is on a loop with trains going Waterloo-CJ-Putney-Richmond
-Kingston-Wimbledon-CJ-Waterloo and also on the Waterloo-Shepperton
line. It's possible that a particular time of day the quickest route
might be via Twickenham on a train that is ultimately going to Waterloo,
though it's usually only so described once it gets to Twickenham or
Strawberry Hill.

--
Tony Bryer