Harrow struck first through Sam Winters but Millfield hit back to lead 14-7 with two superb solo scores through Ben Morrow and Will Stebbings.
Patrick Keaveney cut the gap to two for Harrow, but narrowly missed the kick that followed leaving Millfield with a slender advantage at the break.
George Bullivant showed his pace and power with a superb double to take Millfield into an unassailable lead, with Harrow's final score proving a consolation as Millfield booted the ball into touch from the resulting restart to win a first title since 2014.
It was a stunning turnaround for the tournament's most successful team, and director of rugby John Mallet was full of praise for the resilience his side had shown after a day one defeat to Hampton.
Esta historia es de la edición March 24, 2024 de The Non-League Football Paper.
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Esta historia es de la edición March 24, 2024 de The Non-League Football Paper.
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CURRAN HAUNTS NASH 3 AGAIN! FER FOOTBAL GROUP
Savage delight as Macc hold nerve
WILL'S BRACE SPOT ON FOR LIONS'TITLE BID
WILL Longbottom's second-half brace from the penalty spot saw Guiseley beat Hebburn Town - a result which saw them leapfrog the Hornets in the play-off places.
CLARKE ENJOYS INSTANT IMPACT!
Returning boss sees Reds clinch late win
JACKSON STUNNER BOOSTS CLARETS
FARNHAM Town staged a second-half fightback to further cement their position at the top of the Isthmian South Central.
WELLIES ARE ON THE UP AGAIN!
THE terrible Coronavirus outbreak decimated Non-League football in many ways.
BRETT BAGS A QUICK SWITCH
Munyard joins Jammers after Regent
BEES HIT BACK IN CAPITAL THRILLER
NICKE Kabamba scored two penalties inside three second-half minutes as high-flying Barnet fought back to edge out London rivals Dagenham & Redbridge in a seven-goal thriller at Victoria Park.
NOR'S THE MERRIER FOR LATICS
SLICK Oldham Athletic cantered to a resounding victory over Tamworth - but boss Micky Mellon and his management are still demanding more!
JOE'S GOT ROBINS IN THE ZONE!
FREE-SCORING Altrincham made it five matches unbeaten as they comfortably beat struggling Southend United to close in on the playoff spots.
SHAYMEN ARE HOTI TO TROT
TEN-MAN Yeovil Town found FC Halifax unbreachable Town despite concerted efforts as the Shaymen edged this battle of National League play-off contenders at Huish Park.