From Botton Head, Lancashire to all cities in Gwent starting with letter M
- Machen, Lancashire
- Maes glas, Lancashire
- Maesycwmmer, Lancashire
- Maesygwartha, Lancashire
- Magor, Lancashire
- Maindee, Lancashire
- Malpas, Lancashire
- Mamhilad, Lancashire
- Manmoel, Lancashire
- Manorside, Lancashire
- Manson, Lancashire
- Mardy, Lancashire
- Markham, Lancashire
- Marshes, Lancashire
- Marshfield, Lancashire
- Maryland, Lancashire
- Mathern, Lancashire
- May Hill, Lancashire
- Maypole, Lancashire
- Melin Caiach, Lancashire
- Michaelston y Fedw, Lancashire
- Middle Coedcae, Lancashire
- Millbrook, Lancashire
- Mitchel Troy, Lancashire
- Mitcheltroy Common, Lancashire
- Monmouth, Lancashire
- Monmouth Cap, Lancashire
- Mornington Meadows, Lancashire
- Mount Ballan, Lancashire
- Mount Pleasant, Lancashire
- Mountain Air, Lancashire
- Mounton, Lancashire
- Mynyddislwyn, Lancashire