The match, sponsored by Hastings Direct, began with both teams looking dangerous. A good low save from goalkeeper Michael Platt prevented the visitors going in front before Rosh Wells headed wide from close range after a good cross by Alan Foster.
Sidley took the lead on 23 minutes in style as Lee Carey spotted Mike McDonald off his line and lobbed the ball over the Lindfield goalkeeper and into the net from 30 yards.
And Sidley went into the break two goals to the good as, on 42 minutes, Wells whipped in a delicious free kick from the left which was powerfully headed home by Zac McEniry.
At the start of the second half the Blues rather gifted Lindfield a route back into the game as on 53 minutes the ball was played back to Platt who took a little too long and his clearance was charged down by Aaron Walsh, rebounding off the striker and rolling into the Sidley net.
Sidley dug in as Lindfield searched for the equaliser although neither side could quite get on top with a number of niggly fouls disrupting the flow of the game. It looked as though Sidley would hold on for the narrow win but in the final minute Danny Ellis beat the defender to a loose ball to roll it into the far corner and seal the win.
A good start to life in the Premier Division for a Blues team who did not make a substitution against a side traditionally competing at the top end. The Man of the Match was Lee Carey for his excellent opening goal and his all round link up play.
Sidley Team: Platt, Walker, Clifford, McEniry, Saunders, Bristow, Wells, Ellis, Foster, Carey, Baldwin.