Clayton is a small village and former civil parish, now in the parish of Hassocks, in the Mid Sussex district, in the county of West Sussex, England. It lies at the foot of the South Downs, 41 miles south of London, 6 miles north of Brighton, and 28 miles east northeast of the county town of Chichester. Other nearby towns include Burgess Hill to the north and …Clayton is a small village and former civil parish, now in the parish of Hassocks, in the Mid Sussex district, in the county of West Sussex, England. It lies at the foot of the South Downs, 41 miles south of London, 6 miles north of Brighton, and 28 miles east northeast of the county town of Chichester. Other nearby towns include Burgess Hill to the north and Lewes, the county town of East Sussex east southeast. The Clayton Windmills, known as "Jack and Jill", sit on the hill above the village. In 1961 the parish had a population of 1548. On 1 April 2000 the parish was abolished and merged with Hassocks, Burgess Hill and Pyecombe.