2018–19 Southern Counties East Football League Division One

At the end of season 2017–18, the following teams left the division: The remaining 15 teams, together with the following, form Division One for 2018–19:
 * Promoted to Step 5
 * Fisher, to the Premier Division
 * K Sports, to the Premier Division
 * Punjab United, to the Premier Division
 * Relegated to Step 7
 * Crockenhill, to the Kent County League
 * Relegated from Step 5
 * Rochester United, from the Premier Division
 * Promoted from Step 7
 * Greenways, from the Kent County League
 * Kennington, from the Kent County League
 * New team
 * Welling Town

Top scorers
Correct as of 15 October 2018