Its a place near Guildford, Surrey, and Its a major route linking the A3 ( Portsmouth Rd ) to the M3 . Much in use recently due to long term roadworks at the top of the M3.
Lots of Squaddies would know that route as it passes Aldershot. OK Bee
ps. By the way Bee, Hinds Head is just down the road ( A3) from Hogsback ( true )