Isthmian League Premier Division 2015-16

The Premier Division consists of 24 clubs: 18 clubs from the previous season, and six new clubs:


 * Brentwood Town, promoted as play-off winners in Division One North
 * Burgess Hill Town, promoted as champions of Division One South
 * Farnborough, relegated from the Conference South
 * Merstham, promoted as play-off winners in Division One South
 * Needham Market, promoted as champions of Division One North
 * Staines Town, relegated from the Conference South

Farnborough are required by the Isthmian League to pay their creditors in full before the league's 2016 AGM. If this is not fulfilled, the league will relegate the club. Therefore, if Farnborough finished top, they would not be promoted. If they finished in a play-off place, they would not be eligible to take part in the play-off competition. If they finished between 6th and 20th, they would be relegated to Step 4. If they finished between 21st and 24th, they would be relegated two steps, to Step 5.