Polegate Windmill

Polegate Windmill, also called Ovenden's Mill or Mockett's Mill, was built in 1817 and was working by wind until 1943 , then an electric motor  was fitted as a means of driving the stones  and the mill continued working until 1965. Restored and now open to the public, the original applewood machinery can still be found inside this 45 feet (13 metres) tower mill.

West Blatchington Windmill

West Blatchington Windmill was built in the 1820s, first appearing on Greenwood's map of 1823. It was painted by John Constable in 1825. The mill is hexagonal in plan, whereas most smock mills are octagonal. It was working until 1897, when two sails were damaged. In 1937, the mill was acquired from the Marquess of Abergavenny by Hove Corporation, and has been maintained as a landmark.
http://www.visitbrighton.com/things-to-do/west-blatchington-windmill-p69253

Beacon Mill

This black smock mill, maintained by The Rottingdean Preservation Society, known as "Beacon Mill", was erected on a single-storey brick base at the present site in 1802.
The last miller, Mr George Nicholls, finished work here in the early 1880s and by 1890 Beacon Mill was regarded so disheveled as to require immediate demolition. Fortunately this was delayed and emergency measures taken. In 1905-1906 the Marquis of Abergavenny, on whose land she stood, had the mill renovated.
Further repairs were carried out in 1935, 1960, 1975 and again in recent years.
Little of the original milling machinery now remains.
The first and ground floors are open to the public and interpretation information is available.
Open : 2pm to 4.30pm on the Saturday and Sunday of National Mills Weekend and on the third Sunday of each month from May to September. Car parking in the village. Wheelchair access to ground floor and grounds only. Entry free, donations welcome. 
http://www.sussexmillsgroup.org.uk/open1.htm#Rottingdean