Following the opening of Sandy railway station by the Great Northern Railway in 1850, local landowner Captain William Peel, third son of former Prime MinisterSir Robert Peel, saw the benefits of a connecting link to Potton and added his voice to those of local traders who were calling for the construction of a line. Peel, the owner of an estate of around between Potton and Sandy, offered to give permission for the line to cross his land and, furthermore, to construct it at his own expense. Construction began in May 1856 and by 25 June 1857 was ready for opening to goods traffic. The line, and 2 furlongs long and built at a cost of £15,000, did not require an Act of Parliament as it ran through private land owned by Captain Peel. The Sandy and Potton Railway was worked by a small 0-4-0 well-tank engine built at a cost of £800 by George England and Co. in Hatcham. Captain Peel named the engine Shannon after, a frigate which he had commanded in the Far East in the year it was built. The outlay in constructing the railway was soon recovered through the fruit and vegetable traffic carried from Peel's estate and the manure and fertiliser transported in, turning a £70 per annum profit for his estate in 1853 to one of £500 per annum in 1858. Passenger traffic commenced in November 1857 after an inspection from the Board of Trade. The initial station at Potton was equipped with very basic facilities; there was no booking office or passenger waiting room. A goods shed, small staff office and locomotive shed were however provided. The station was sited in a field to the west of the Biggleswade Road.
Station buildings
The Sandy and Potton Railway was acquired by the Bedford and Cambridge Railway in 1860, which intended to make the route part of a longer line to Cambridge. Track was relaid and Potton station was resited north to its current position. A more substantial two-platformed station was provided with a cast-iron glass canopy supported by stanchions on the Up platform bearing the Bedford and Cambridge's initials in script letters. The majority of the station's buildings were situated on the Up side, including the goods shed, cattle pens and water tank with steam pump. A small waiting shelter was provided on the Down side, linked by a footbridge, for passengers. The station saw much outward traffic in agricultural goods, such as potatoes and onions, and inward traffic of manure and fertiliser, much coming from stables in London and the London Zoo. A siding led to the south of the station where it served a sandpit used by Beart's Brick Company from October 1870.
Closure
Although the arrival of the railway had helped boost the town's population to around 2,000 by 1937, the line found itself proposed for closure first in 1959 and then again in 1963, before eventually closing in 1968. The idea of preserving the line between Sandy and Potton was discussed at a public meeting at Sandy which resulted in the formation of the Sandy & Potton Steam Railway Society. The organisation was, however, unable to raise outright the purchase price asked for by British Railways and the scheme failed despite the support of Sandy Urban District Council. Track removal began in July 1969 and the Society was eventually wound-up.
Post-closure
The station was purchased by George Howe, a former railwayman, who restored the yellow gault brick main passenger building as a private residence. The goods shed from the first Potton station survives as a vegetable store. The locomotive known as "Shannon", which was later used on the Wantage Tramway, is now a stationary exhibit at the Didcot Railway Centre.
