Old maps for metal detecting in England

Last updated: 9 September 2026

People lose things where people were. That's the whole idea behind researching with old maps: a farmstead cleared a century ago, a chapel long demolished, a fair held on the same green for generations — each is a place where coins, buckles and buttons went into the ground. Old maps of England show you those places, many of which have vanished from the modern landscape entirely. Here's how to read them and turn them into ground worth walking.

Why old maps lead to finds

The landscape you walk today is only its latest version. Over a couple of centuries, farms were abandoned, roads re-routed, mills fell silent and whole hamlets shrank to a single field. Every one of those places was busy with people — and people drop things. A modern map shows none of it; an old one shows all of it. The detectorist's research job is to line the two up and ask: where was there something here that isn't here now?

Historic Ordnance Survey six-inch maps

The Ordnance Survey County Series six-inch maps (1:10,560), surveyed from the mid-1800s and revised into the early 1900s, are the detectorist's workhorse. At six inches to the mile they show individual buildings, farm tracks, wells, smithies, field boundaries, footbridges and ponds — much of which has since been ploughed out or built over. Comparing a six-inch sheet with the ground today is the single most productive piece of desk research you can do. The National Library of Scotland publishes them free, georeferenced against modern mapping, for the whole of Britain.

GB1900 — the vanished places

GB1900 was a huge volunteer project that transcribed and pinned every text label on the second-edition six-inch OS maps (published roughly 1888–1914) — around two and a half million place-names, released under a Creative Commons licence. For a detectorist it's a searchable index of the past: a "Chapel (disused)", an "Old Smithy", a "Fair Field" or a lone farmstead name sitting in what is now an empty field. Those labels are exactly the vanished places worth researching — and Muld surfaces them on the map so you can spot them at a glance.

Tithe maps and field names

Older still are the tithe maps of the 1830s and 1840s, large-scale parish surveys made to work out who owed tithes on which land. Each comes with an apportionment that lists, for every numbered parcel, the landowner, the occupier, the land use and — crucially — the field name. Field names are little archaeological reports in themselves: a "Chapel Close", "Castle Field", "Money Field" or "Black Acre" often marks something that was once there. The originals are held at The National Archives (records IR 29 and IR 30), and many are also available through county record offices.

The three-layer method

No single map is the answer — the skill is in combining them:

• Start on the historic maps and GB1900: find a vanished building, a telling field name, an old road.
• Switch to LiDAR to see whether the ground still holds a trace — a platform, a hollow, an earthwork. See our guide to LiDAR maps.
• Check the modern aerial photo for what's at the spot now, and the scheduled-monument overlay so it isn't protected.
• Work out whose land it is, and get permission.

By the time you leave home you've turned a hunch into a plan — three centuries of the same field, read in a few minutes.

GB1900 vanished places in Muld

The research is powerful but fiddly: historic OS, tithe and GB1900 usually live in separate archives and viewers, and none of them travels into the field. Muld brings the GB1900 place-names onto the map — thousands of them, the vanished farms, chapels and mills among them — so you can tap a lost place on your phone and lay it over LiDAR and the protected sites. Then take the promising ones back to the historic OS and tithe archives to dig deeper. GB1900 in Muld is part of Muld+.

Official sources

This page is a plain-language introduction. If you want to explore the maps themselves, these are the places to go.