Jon Gardner and Wayne Blossom bagged a brace apiece as Banbury eased past Beaconsfield SYCOB in their first qualifying round tie.
Banbury opened the scoring in the sixth minute.
Wayne Blossom headed the ball forward, and although Andy Baird was in an offside position, Howard Forinton cleverly came through to outstrip the Beaconsfield defence, and he clipped the ball over goalkeeper Jonathan Beames from 15 yards.
Beames then made a good save from Baird following a Gardner cross from the right.
Banbury continued to pour forward and Baird robbed Kevin Cotton of the ball and put Forinton away, but his shot hit the outside of a post, with Beames beaten.
The Puritians went close again when George Redknap played the ball through to Stuart Bridges and his shot was brilliantly turned away by Beames.
United's second came in the 26th minute when Blossom headed home Ady Fuller's corner from six yards.
In the 38th minute it was 3-0, following a rare Beaconsfield attack which was cleared out of defence by Blossom to Bridges on the right.
He sent over a diagonal pass to Gardner, who took the ball on and lobbed the advancing Beames from the edge of the penalty area.
Beaconsfield pulled a goal back in the 40th minute when Riccardo Cannon found himself in acres of space, and he beat Alan Judge from 12 yards, although Tommy Kinch almost cleared it off the goal-line.
Two minutes later, Banbury regained their three-goal cushion, Forinton releasing Gardner, who hit a 20-yard shot which Beames got a hand to, but couldn't prevent it from going into the net.
Banbury's fifth came in the 48th minute when Beames did well to save Redknap's fierce shot, but the ball flew up for Blossom to head home his second.
With Banbury in control, manager Kevin Brock gave substitutes Ollie Stanbridge, Daniel Szczukiewicz and Murray Nicholls a run out in the second half.
Banbury came close to adding No 6 five minutes from time when Fuller's free-kick beat the defensive wall and Beames, but cannoned back off an upright, with Blossom just missing the rebound.
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