The railway line between Brighton and Portsmouth was built in stages, and the section between Chichester and Havant was opened on 15 March 1847, and there were two intermediate stations, at Bosham and Emsworth.

[2] Other stations were opened later, several coinciding with the introduction of steam rail-motor services between Portsmouth and Chichester by the London, Brighton and South Coast Railway on 11 June 1906.

[6] All services at Warblington are operated by Southern using Class 377 EMUs.

The typical off-peak service in trains per hour is:[7] Additional services, including trains to and from Brighton via Worthing call at the station during the peak hours.

On Sundays, eastbound services run to and from Brighton instead of London Victoria.