Swans will continue in the Ryman League Division One South next season.
Peacehaven & Telscombe and Leatherhead were promoted to the Premier Division, while Crawley Down Gatwick and Eastbourne Town were relegated.
New clubs are relegated Carshalton Athletic and promoted East Grinstead Town (Sussex County League), South Park (Combined Counties League) and Whyteleafe (Southern Counties East League). Redhill have been reprieved from relegation.
Burgess Hill Town
East Grinstead Town
Tooting & Mitcham United
Walton & Hersham