Morning everyone,
On closer inspection of the 1968 OS map on old-maps.co.uk, there are a few long, straight tracks on a few of the fields in the area in question to the SW of the town, all orientated NE-SW. Brighton Hill Farm has two tracks (present day Corinthian Cl and Danebury Rd areas), another track adjoining the Hatch Warren Cottages (running through present day The Crofts area) and again in the field to the west of Viables Cottages (present day Sullivan Rd). Could any of these farm tracks have been used as an airstrip?