1 A turnpike road established between 1750 and 1775.
Watling Street used to be a toll road, a road which travellers would have to pay to use. The road was made a toll road during the Imperial period.
1 Site of Birch Coppice colliery railway marked on OS map of 1885.
The site of Birch Coppice colliery railway, dating to the Imperial period, is marked on the OS map of 1885.
1 Site of signal box marked on OS map of 1885.
The site of a railway signal box that was built during the Imperial period. It was situated 300m northwest of Grendon Bridge, and is marked on the Ordnance Survey map of 1885.