The league constitution for the Ryman Football League Division One (South) has been announced
| Club | From |
| Burgess Hill Town | IL 1S |
| Carshalton Athletic | IL P |
| Chipstead | IL 1S |
| Corinthian Casuals | IL 1S |
| East Grinstead Town | SCL – Step 5 |
| Faversham Town | IL 1S |
| Folkestone Invicta | IL 1S |
| Guernsey | IL 1S |
| Hastings United | IL 1S |
| Herne Bay | IL 1S |
| Horsham | IL 1S |
| Hythe Town | IL 1S |
| Merstham | IL 1S |
| Ramsgate | IL 1S |
| Redhill | IL 1S |
| Sittingbourne | IL 1S |
| South Park | CCL – Step 5 |
| Three Bridges | IL 1S |
| Tooting & Mitcham United | IL 1S |
| Walton Casuals | IL 1S |
| Walton & Hersham | IL 1S |
| Whitstable Town | IL 1S |
| Whyteleafe | SCEL – Step 5 |
| Worthing | IL 1S |