Sandy formed the junction between the Oxford to Cambridge line, and the Great Northern (London to Edinburgh) line, and at one time boasted no less than three stations.  Two of them stood together on the site of the current station, and the third lay at Girtford, on the line to Bedford. The original section, running between Potton and Sandy, was built by

Captain William Peel RN VC. Sadly, in common with many semi-rural routes, the line between Cambridge and Bedford has long been closed, with little of the original route now recognisable. There is now in the town, a public house named after Peel, in recognition of his local and heroic endeavours. This was formerly the 'Lord Nelson' and is believed to have been named after the family who once owned it.  

The Great Northern line has survived the many changes of ownership, grouping, nationalisation et al, and currently serves commuters in the area as part of the First Capital Connect operation. The line was electrified in the 1980's. The electric "225's" thundering through Sandy on their way to Edinburgh, Newcastle and York were operated by GNER but this has changed, from 2008 with the £1.3bn franchise going to National Express East Coast.  

A Modern Electric Multiple Unit picking up passengers on its way to Peterborough in Network South East colours. The franchise is now operated by First Capital Connect.