Marlow’s goals came from Ian Davies (2), Ben Gladwin and Jordan Chandler.
Ardley United kept in contention winning 2-1 against Ascot United with goals from Steve Howkins and Ollie Stanbridge. Ben Knight scored for Ascot.
Thame United moved into the top six for the first time this season following a 4-0 win over Shrivenham.
Ben Gray scored twice for Thame with Ellis Hercules and Matt Hall adding further goals.
Oxford City Nomads continue to move in the right direction following a 2-0 defeat of Highworth Town. Zac McEachran and Dan Warne scored for the Nomads.
Highmoor Ibis recorded a 4-1 win over Holyport with Jordan Brown and Steve Peacock both netting inside the first 10 minutes.
Further goals followed from Liam Ferdinand and Ivan Iliev. Dan Bailey pulled a goal back for Holyport in the last minute.
Newbury beat Reading Town 4-2 with a hat-trick from Dan Shaw and a goal from Kalief Madden. Darren Mclean and Ahmed Mohamed replied for Reading Town.
Credit: Brian Kirk