[3] Becoming a separate manor in the 13th century, it was sold to Guy Carleton, 1st Baron Dorchester, and the first Governor General of Canada in 1786, and has stayed in that family ever since.

Originally a Saxon hunting settlement, the village's economy is rooted in agriculture and more latterly timber, which flourished at the same time as the Basingstoke Canal.

These days, agriculture remains the most important local industry, but most residents work elsewhere, commute to London or are retired.

The Tithe map of 1842 shows a mansion, approach drive, stable block, grounds and a surrounding park.

The 1st edition OS maps show a partly walled kitchen garden as well as lawns and features such as a fountain and a pond.

Greywell's church, dedicated to St Mary the Virgin, is an ancient structure of flint with stone quoins and dressings in the Norman and early English styles.

The narrow 13th-century Early English chancel arch is also a prominent feature, while on the stonework to the left outside the church door there are visible remains of several consecration crosses dating back to the period of the Crusades.

[4] Along with Greywell Moors, the tunnel and its bat colony form one of two Sites of Special Scientific Interest in the area.

A short section of the canal still in water, leading from the western tunnel portal with the original towpath, is maintained as a nature reserve.