There is a community bus service, the Cuckmere community bus, which serves the outlying villages and links with the local towns of Hailsham, Seaford and Eastbourne. Operated by volunteer drivers, it is also available for private hire. Details, including bus timetables, can be found here.
The nearest station is Berwick Station, which is a main line railway station with regular train services to London and stations on the South Coast. Car parking is available. Details of the train timetable can be found here.