This is a Post Office lamp box. I never knew it had a name until I started to research Derwent Village. It is called a lamp box because it was designed to be attached to lamp posts. You can also find them attached to telegraph poles as this one is in the village of Derwent in the Peak District National Park. Some were also placed into walls, in fact I used to have one in the bathroom of my old house.
Along this section of the walk you can find lots of historical heritage. The old school is just on the opposite side of the road, it was a catholic school and still has the Virgin Mary statute above the doorway. A little further along the road is the old gateway to Derwent Hall and going the other way is the gateway to the old vicarage.
If you look carefully along the roadside you can spot benchmarks placed there by Ordnance Survey surveyors in the 1852 and 1896 surveys.
The Post Office lamp box appears on Walk No.12 in Dark Peak Walks published by Cicerone Press