There seems to be this place with an excellent service by train and bus to anywhere in the country: 'Sorry Not in Service' - there seems so many trains and buses go there.
Seriously also check train loadings - there may be a great service but, if you can't get on, they might as well not be running.
That's why I dont want to move to Clapham. It's impossible to get on a SWT to Waterloo in the morning! A friend of mine ignored my advice has has to wait for the 5th train to get on!