The chapter on Bishopstrow in A History Of The County Of Wiltshire, Volume 8, Warminster, Westbury And Whorwellsdown Hundreds, originally published by Victoria County History, 1965, mentions that:
The village [Bishopstrow] lies south of the Warminster-Salisbury road, which crosses the parish from west to east. In 1773 the turnpike road from Warminster followed the present line of the main road [Boreham Road] through Boreham as far the bend [now Temple Corner] near the entrance to the house [Bishopstrow House]; there it turned sharply to the north-east [through what is now Knapp Farm Wood] for a short way, and then again at right angles [crossing the drove – now called Cox’s Drove – and then passing north of the house and buildings of Bishopstrow Farm] to rejoin the present line of road near the parish boundary [near Crowell’s Yew and Yew Tree Cottages]. The road had been straightened by 1808 [passing south of Knapp Farm and the house and buildings of Bishopstrow Farm].