From Henley, West Sussex to all cities in Lincolnshire starting with letter M
- Mablethorpe, West Sussex
- Maidenwell, West Sussex
- Maltby, West Sussex
- Maltby le Marsh, West Sussex
- Manby, West Sussex
- Manor Hill Corner, West Sussex
- Manthorpe, West Sussex
- Manthorpe, West Sussex
- Manton, West Sussex
- Manton Warren, West Sussex
- Mareham le Fen, West Sussex
- Mareham on the Hill, West Sussex
- Markby, West Sussex
- Market Deeping, West Sussex
- Market Rasen, West Sussex
- Market Stainton, West Sussex
- Marshchapel, West Sussex
- Marston, West Sussex
- Martin, West Sussex
- Martin, West Sussex
- Martin Dales, West Sussex
- Martin Moor, West Sussex
- Marton, West Sussex
- Mavis Enderby, West Sussex
- Mawthorpe, West Sussex
- Medlam, West Sussex
- Melton Ross, West Sussex
- Messingham, West Sussex
- Metheringham, West Sussex
- Mid Thorpe, West Sussex
- Middle Rasen, West Sussex
- Midville, West Sussex
- Mill Place, West Sussex
- Millthorpe, West Sussex
- Miningsby, West Sussex
- Minting, West Sussex
- Monksthorpe, West Sussex
- Moor Side, West Sussex
- Moorby, West Sussex
- Moorhouses, West Sussex
- Moortown, West Sussex
- Morton, West Sussex
- Morton, West Sussex
- Morton, West Sussex
- Moulton, West Sussex
- Moulton Chapel, West Sussex
- Moulton Eaugate, West Sussex
- Moulton Seas End, West Sussex
- Muckton, West Sussex
- Muckton Bottom, West Sussex
- Mumby, West Sussex