✨OS Maps LAYERS ✨ OS Maps has 4 layers to choose from when creating a route and viewing maps. 🧅 OS Standard Mapping is a free, simple map and a great starting point for planning activities. 🧅 Topographic mapping has more detail and shows OS’s Explorer and Landranger maps. 🧅 Aerial maps shows hi-res imagery, great for seeing the terrain and land use. 🚲 You can also add the National Cycle Network layer to your map to see cycle routes across the UK with the toggle. | Ordnance Survey

Ordnance Survey's award winning OS Maps is now even better, with the new Aerial 3D layer | Ordnance Survey

Hidden history. This small arrow cut into the stone is a damaged Ordnance Survey benchmark. The horizontal datum line above it has been lost to weathering. Churches were used because they were solid, permanent landmarks. This point fixed the church at 18.127m above sea level. Easy to miss — but part of Britain’s mapping history. | St Oswald's Church, Methley