Milton Keynes has 5 railway stations.
The main one being Milton Keynes Central,
in the North is Wolverton and in the South is Bletchley.
There are also the smaller Bow Brickhill and Woburn Sands Stations that are on the Bletchley to Bedford Line.
The following is a link to National Rail updates including service disruptions.
When buying a rail ticket to Milton Keynes or Bletchley you can add on a discounted day bus pass for £2. This is not valid on the University's own shuttle buses (which have a low fare anyway).
To check if the trains are running on time at Central Milton Keynes, the following is a live link to the train departure board:
Virgin Trains operate various services from Central Milton Keynes and operate the non-stop/limited stop service between London and Milton Keynes and Birmingham and beyond on the West Coast line
Further details on interest free season rail ticket loans