| Medical Information Research Limited | Information & communication | 1991 |
| Meehanpps Ltd | Administrative & support | 2015 |
| Meracalm Ltd | Real estate | 2019 |
| Mgbinc Limited | Extraterritorial | 2014 |
| MI Jetting and Drainage Limited | Water & waste | 2021 |
| Mick Badman Engineering Limited | Wholesale & retail | 2005 |
| Mill Close (Staplecross) Management Limited | Households | 1999 |
| Millbrook Design and Print Limited | Administrative & support | 1999 |
| Mimas Mobile Limited | Information & communication | 2011 |
| Mmft Cottleston Limited | Information & communication | 2014 |
| Morgan & Morgan Builders Limited | Construction | 2003 |
| Mosso Design LLP | | 2021 |
| Moto Electronica Ltd | Manufacturing | 2019 |
| Motorsport Media Services Ltd | Manufacturing | 2015 |
| MRH Food Ingredients Ltd | Hospitality | 2018 |
| MTF Enterprises Ltd | Wholesale & retail | 2005 |
| Must-Chup Ltd | Hospitality | 2013 |
| MVL Enterprises Limited | Financial services | 2014 |
| Nerus Engineering Co Ltd | Wholesale & retail | 2020 |
| New Spice Drinks Ltd | Hospitality | 2023 |
| Nextstop Limited | Real estate | 1985 |
| Noetica Limited | Information & communication | 1997 |
| North Kent Shipping & Chartering Limited | Transport & logistics | 1983 |
| North Park Group Ltd | Financial services | 2024 |
| North Park Logistics Ltd | Transport & logistics | 2024 |
| North Star Media Consulting Ltd | Professional & scientific | 2025 |
| Number 1-5 Robertsbridge (Management) Company Limited | Other services | 2007 |
| Oastbrook Estates Limited | Agriculture & fishing | 2017 |
| Old Manor Management Limited | Professional & scientific | 2023 |
| Ostridge Contractors Ltd | Agriculture & fishing | 2017 |
| Oxford Quality Centre Limited | Professional & scientific | 2012 |
| Paragoda Recruitment Limited | Administrative & support | 2025 |
| Pasithea Estates Limited | Real estate | 2017 |
| Pastoralist Consultants International Limited | Education | 2002 |
| Paul Pitman Consulting Limited | Other services | 2026 |
| Pavey Engineering Ltd | Professional & scientific | 2013 |
| Paxton Equity Ltd | Financial services | 2023 |
| Pcmba Limited | Professional & scientific | 2012 |
| PDR Builders Ltd | Construction | 2022 |
| PDS Consultants Ltd | Professional & scientific | 2023 |
| Peak Performance Business Management Ltd | Professional & scientific | 2020 |
| Peak Performance Martial Arts (Horley) Ltd | Health & social care | 2020 |
| Peak Performance Martial Arts (Tunbridge Wells) Ltd | Health & social care | 2020 |
| Pendine Performance Limited | Professional & scientific | 2024 |
| Penhurst Close Residents Company Limited | Households | 2004 |
| Penny Smith Enterprises Limited | Information & communication | 2006 |
| Peprotec Ltd | Information & communication | 2026 |
| Perimeta Property Ltd | Real estate | 2015 |
| Pet Waste Solutions Ltd | Water & waste | 2020 |
| Peter Johnson Entertainments Limited | Arts & recreation | 2013 |
| PGM Structural Ltd | Professional & scientific | 2020 |
| Philippa H Deeley Limited | Administrative & support | 2007 |
| Pink Moon Records Limited | Information & communication | 2022 |
| Pips and Pumps Ltd | Education | 2025 |
| Ploy Technology Limited | Information & communication | 2024 |
| Podium Music Limited | Professional & scientific | 2009 |
| Powder Mill Electronics Limited | Manufacturing | 2010 |
| Powerbee Limited | Wholesale & retail | 2008 |
| Preloved Proshop Ltd | Wholesale & retail | 2026 |
| Prestige Events South Limited | Administrative & support | 2023 |
| Proofrepair Limited | Real estate | 1999 |
| PS Coaching Services Limited | Real estate | 2023 |
| Pymit Ltd | Information & communication | 2013 |
| Quenchfire Limited | Construction | 2012 |
| Quinta DA Lagoa Estates Limited | Real estate | 1993 |
| Raaft Limited | Manufacturing | 2008 |
| Radmor Accountancy Services Limited | Professional & scientific | 2001 |
| Radmor Limited | Extraterritorial | 2022 |
| Rapid Services Limited | Construction | 2017 |
| Raven's Haven Ltd | Wholesale & retail | 2025 |
| Regal Certification Limited | Professional & scientific | 2025 |
| Revive Medical Solutions Limited | Health & social care | 2023 |
| Rex's Rewinds Ltd | Manufacturing | 2015 |
| Rex's Speed Shop Limited | Manufacturing | 2010 |
| Rhrw Limited | Construction | 2012 |
| Rich Brown Limited | Construction | 2013 |
| Richard Webb Tree Surgeon Ltd | Agriculture & fishing | 2022 |
| Rigeasy Ltd | Other services | 2018 |
| Ringtail Properties Ltd | Transport & logistics | 2024 |
| Road Kill Solutions Ltd | Water & waste | 2024 |
| Robertsbridge Container Storage Limited | Transport & logistics | 2001 |
| Robertsbridge Dental Practice Limited | Health & social care | 2008 |
| Ronsters Limited | Construction | 2024 |
| Roots to the Moon Community Garden CIC | Agriculture & fishing | 2024 |
| Rotamac Energy Solutions Limited | Wholesale & retail | 2013 |
| Rotamac EPC Energy Solutions Ltd | Construction | 2019 |
| Rotamac Turbines Limited | Construction | 2025 |
| Rother Valley Railway Limited | Transport & logistics | 1991 |
| Route 1066 Cafe (Battle) Limited | Hospitality | 2018 |
| Sagesse Finance Limited | Administrative & support | 2010 |
| Salehurst Halt LLP | | 2006 |
| Sally's Country Cakes Limited | Manufacturing | 2006 |
| Sarah Fraser Limited | Information & communication | 2008 |
| Sarah Raven's Cutting Garden Limited | Arts & recreation | 1999 |
| Sarah's Cellar Ltd | Wholesale & retail | 2020 |
| Sarum Builders Limited | Real estate | 1967 |
| SDL Trading Ltd | Construction | 2020 |
| Sederal Productions Limited | Professional & scientific | 2009 |
| Selfcreate Limited | Real estate | 2002 |
| Shake Business Solutions Limited | Financial services | 2009 |