They went into the crucial day effectively needing just a point to seal to spot, with second-placed Peterborough United only two points behind but well adrift in terms of goal-difference.
The Posh did what they could with an 8-2 victory at Heather LFC in which Keir Parkes hit a hat-trick but Leicester made sure of success by winning 6-1 at third-placed Northampton Town.
Northampton volley at Leicester’s goal. (Paul Richards)
At Blisworth FC, Alex Madden hit a first-half hat-trick for Leicester’s, her third coming seconds after Northampton had pulled one back.
The visitors added three more goals after the break, Jade Morgan gettting the first of those, 6 minutes in.
Zoe Boote made it 5-1 before the hour mark and Natalie Hurst completed the scoring in the final 5 minutes.
