The 2-0 victory at The Rotherfield sets-up a last-four meeting with another local rival - Petersfield Town.
It's a third win on the spin for Chris Allcock's side - scoring 16 goals in the process and without conceding.
The semi-final tie will be played at The Southdowns Builders Stadium next Tuesday, March 18 (7.45pm).
All support very much appreciated. The winner will face one of Laverstock & Ford or Downton in the final.