Witham station is on the Great Eastern main line in Essex, between Chelmsford and Colchester. It is also the junction for the branch line that heads north to Braintree. There are at least four trains per hour to London Liverpool Street, with more at peak times and an average journey time of about 45 minutes. There's also one train per hour to each of Ipswich, Colchester Town, Clacton-on-Sea and Braintree. The town centre is about ten minutes' walk away or five minutes by bus from outside the station.
The station was opened in 1843 and became a busy goods junction during the 19th century. Nowadays the station is mainly a commuter hub for people working in London, seeing over 2.3 million passenger journeys a year. Improvement works were carried out at the station in 2011 and included a new entrance and footbridge to link to the car park with disabled parking spaces and a new cycle shelter.