| Michael Singleton Consultancy Limited | Education | 2012 |
| Michelle & Johnathon Ltd | Hospitality | 2026 |
| Midpines Group Limited | Hospitality | 2022 |
| Millburgh Hall Management Limited | Households | 2001 |
| MMD (Petworth) Limited | Wholesale & retail | 2012 |
| Mothecombe Digital Ltd | Professional & scientific | 2024 |
| MV Martin Limited | Mining & quarrying | 2020 |
| Natural Cashmere & Accessories Ltd | Wholesale & retail | 2025 |
| Natures Nomads Limited | Administrative & support | 2023 |
| Netherlands Barns Limited | Real estate | 2009 |
| Nexcal Ltd | Manufacturing | 2024 |
| NIBBLES2NOSH (N2N) Ltd | Hospitality | 2011 |
| NIBBLES2NOSH LLP | | 2011 |
| Nick Blunt Fencing Ltd. | Construction | 2013 |
| Nisha Royel Ltd | Wholesale & retail | 2026 |
| Nomads Fish and Chips Ltd | Hospitality | 2013 |
| Nonnington Farm LLP | | 2021 |
| Noodletit Holdings Ltd | Real estate | 2025 |
| Northfold Limited | Administrative & support | 2025 |
| Northwood Associates Limited | Information & communication | 1988 |
| Nugent Court Management Company Limited | Households | 1982 |
| Oak Capital Markets Limited | Financial services | 2025 |
| Oakapple Home (Petworth) Ltd | Wholesale & retail | 2015 |
| Oakapple Trading Co Ltd | Wholesale & retail | 2025 |
| Oakleigh Consultancy LLP | | 2011 |
| Obscura Fine Art Ltd | Arts & recreation | 2023 |
| Octavia Homes Ltd | Construction | 2025 |
| OF Electrical Solutions Ltd | Construction | 2024 |
| Office Investors Ltd | Real estate | 2022 |
| OHD Trading Limited | Wholesale & retail | 2015 |
| Oj-Futures Ltd | Professional & scientific | 2026 |
| Oldrock (2007) Limited | Construction | 2007 |
| Oligen Communications Limited | Information & communication | 2020 |
| Open Door Hospitality (UK) Limited | Hospitality | 2018 |
| Optimal Health Clinics Limited | Other services | 1995 |
| Optimal Health of Harley Street Limited | Health & social care | 1997 |
| OTQ World Ltd | Wholesale & retail | 2026 |
| OUT of Hand Drinks Ltd | Manufacturing | 2024 |
| Outer Land Ltd | Wholesale & retail | 2023 |
| Overingtons Garden Services Ltd | Administrative & support | 2023 |
| Own Your Journey Ltd | Health & social care | 2013 |
| Paradoxx Media Ltd | Arts & recreation | 2021 |
| Park Life Enterprises Limited | Arts & recreation | 2003 |
| Parkgate Arundel Ltd | Professional & scientific | 2014 |
| Paul Holden Limited | Construction | 2008 |
| Perception a Limited | Professional & scientific | 2019 |
| Pericls Ltd | Information & communication | 2025 |
| Perry Limited | Manufacturing | 2009 |
| Pescadora's Ltd | Hospitality | 2013 |
| Petworth Builders & Roofers Ltd | Construction | 2019 |
| Petworth Chorus CIC | Arts & recreation | 2015 |
| Petworth Cottage Nursing Home | Health & social care | 1996 |
| Petworth Festival | Arts & recreation | 2006 |
| Petworth House Tennis Court Limited | Arts & recreation | 2008 |
| Petworth News Limited | Wholesale & retail | 2023 |
| Petworth Park Sports CIC | Arts & recreation | 2017 |
| Petworth Schooling Course Limited | Arts & recreation | 2019 |
| Petworth Veterinary Centre Ltd. | Professional & scientific | 2020 |
| Petworth Wellbeing & Lifestyle Ltd | Hospitality | 2025 |
| PGP Productions Limited | Arts & recreation | 2016 |
| Phoenix Services (Surrey) Limited | Hospitality | 2013 |
| Piccolo Pilates Ltd | Health & social care | 2021 |
| Picton Smith Ltd | Real estate | 2020 |
| PIP & Cork Ltd | Agriculture & fishing | 2018 |
| Pixello Limited | Information & communication | 2016 |
| PKB Mediation Limited | Other services | 2024 |
| Place Settings Event Hire Ltd | Hospitality | 2020 |
| Plumb Build Solutions Ltd | Construction | 2021 |
| Podium Pet Products Limited | Wholesale & retail | 2016 |
| Polar Bookkeeping and Accounting Limited | Professional & scientific | 2025 |
| Polat Services Ltd | Hospitality | 2025 |
| Polo Pony Stud Book Limited | Arts & recreation | 2015 |
| Polopermits Limited | Administrative & support | 2010 |
| Portlock Limited | Professional & scientific | 2020 |
| Power Pro Expert Ltd | Professional & scientific | 2024 |
| Practi-Kool Refrigeration Limited | Construction | 2013 |
| Prism Window Cleaners Limited | Administrative & support | 2003 |
| Ptfe Coatings Limited | Manufacturing | 2008 |
| Pure Foods Limited | Hospitality | 2021 |
| PW Property Consultants Ltd | Real estate | 2026 |
| Quercus Interior Projects Ltd | Construction | 2018 |
| Quest Hypnotherapy Ltd | Health & social care | 2016 |
| Quest Psychotherapies Limited | Health & social care | 2013 |
| R J Skinner Limited | Construction | 2010 |
| Radius Projects Ltd. | Administrative & support | 2001 |
| RAH Fitness Ltd | Arts & recreation | 2019 |
| Raker GUN Works Limited | Manufacturing | 2013 |
| Raker Limited | Wholesale & retail | 1999 |
| Raker Pest Control Supplies Limited | Agriculture & fishing | 2015 |
| RCJ Bars Limited | Hospitality | 2025 |
| Recruit.Ed Limited | Administrative & support | 2016 |
| Red Card Petworth Ltd | Wholesale & retail | 2012 |
| Redmen Consultancy Services Limited | Professional & scientific | 1992 |
| Redridge Associates Limited | Financial services | 2006 |
| Reinforced Shuttlecocks Limited | Wholesale & retail | 1991 |
| Reivax Ltd | Real estate | 2019 |
| Remarkable Removals Limited | Transport & logistics | 2023 |
| Renergy Homes Ltd | Professional & scientific | 2022 |
| Renergy Management Ltd | Construction | 2024 |
| Retroesque Ltd | Wholesale & retail | 2017 |