Polled Oak Slade was an area of common land comprising approximately 100 acres situated at the western end of the parish. In the Tithe Award it was measured at 101 acres and 37 perches. A pollarded oak was probably a parish boundary mark; 'Slade' is an Anglo-Saxon term for valley.

In 1889, most of Polled Oak Slade was now taken up by the the Long Siberia, Short Siberia and (what was to become) Century rifle ranges of the NRA.