Romsey station was built by the
London and South Western Railway on its line from Eastleigh to Salisbury and opened on 1 March 1847. It became a junction in 1865 when the Andover and Redbridge Railway (also known as the
Sprat and Winkle Line) was opened: this joined the earlier route just east of the station before diverging again at Kimbridge Junction, a short distance to the north, en route to . The subway connecting the two platforms was added in 1887. The waiting room has a collection of framed photographs from earliest times through to the mid-20th century. The
signal box has been preserved and can be visited. The Andover line fell victim to the
Beeching Axe in September 1964, and the Eastleigh route closed to passengers in May 1969. The Eastleigh line remained open for freight traffic and as a diversionary route. The line to Eastleigh via Chandlers Ford regained regular passenger services in May 2003. Previously managed by
Great Western Railway, the station was transferred to
South Western Railway in April 2020. ==Services==