Reds were worthy winners - after initially falling behind - at a rammed Nyewood Lane, to reassert their seven point lead at the top of the tree.
Worthing made light work of Lewes to set up a mouthwatering quarter-final at Bognor in The Sussex Senior Cup.
Worthing suffered a rare off day as an impressive-looking Margate side took maximum points.
Worthing went three-nil up and looked to be coasting towards three points, only for Dulwich to hit back and set-up a tense final twenty minutes.
Two more for the prolific Ollie Pearce and a first for Callum Kealy eased Worthing to a trouble-free three points from a long trip to North Essex.
A pair of match-defining saves by Harrison Male ensured the Reds escaped North London with a point from a topsy-turvy two-all draw.
A quickfire double from Ella Newman gave Worthing an interval lead over promotion hopefuls Dartford but it was the visitors who emerged victorious, after a dominant second-half.
Two late first-half goals were enough for Worthing to cruise to a comfortable win over Wanderers; completing the double over their opponents and reestablishing a five point lead at the top of the table.
A goal two minutes before the break by Becs Bell, on her full debut, proved to be enough to settle the derby with Saltdean and give Worthing their first double of the season in the process.