Bletchley’s undefeated start to the season came crashing down in spectacular fashion as Aylesbury ran in eight tries to two in a one-sided affair.
It took the home side 15 minutes to run in their first try of the afternoon, with an earlier penalty firing them 8-0 up.
Bletchley endeavoured to work themselves back into the match, but handling errors let them down and gave Aylesbury easy ball to work with.
And with 34 minutes on the clock, a converted try put them 15-0 to the good.
Aylesbury would end the half 27-0 ahead, already securing the bonus point and leaving Bletchley a mountain to climb.
Bletchley started the second half well and were awarded a penalty try, which Dean Williams converted well to get on the score board.
But Aylesbury quickly got back on top again, extending their lead to 32-7.
The home side continued to dominate, and scored four tries in seven minutes to bring up their half century.
Despite being under the cosh for the majority of the game, it was Bletchley who had the last say of the match with a try from captain Adam Fox after the visitors had pressurised the Aylesbury try line for a while at the end of the second half, but it was nothing more than a consolation at 51-12.