2018–19 United Counties League Premier Division

At the end of the 2017–18 season, the following teams left the division:
 * Promoted to Step 4
 * Wisbech Town, to NPL Division One East
 * Yaxley, to Southern League East Division
 * Relegated to Step 6
 * Northampton Sileby Rangers, to Division One
 * St Andrews, to Division One

The remaining 18 teams, together with the following, form the Premier Division for season 2018–19:
 * Promoted from Step 6
 * Pinchbeck United, from Division One
 * Transferred within Step 5
 * Rugby Town, from the Midland League