Haywards Heath Town, Horsham YMCA, Pagham and Shoreham applied for promotion to Step 4 for 2017–18.
While Haywards Heath Town won the league, they were subsequently charged by the FA for playing a suspended player.
[2] On 22 May, it was announced that Haywards Heath had 9 points deducted, which would hand the title and promotion to Shoreham.
[3] Haywards Heath's appeal was ultimately dismissed on 15 June,[4] therefore Shoreham's championship and promotion were confirmed.
This resulted in reprieves for AFC Varndeanians and St Francis Rangers from Division One.