| Norfolk Refrigeration Catering Limited | Manufacturing | 2005 |
| Norfolk Trading Limited | Wholesale & retail | 2014 |
| Norspa Ltd | Wholesale & retail | 2012 |
| Nshi Limited | Health & social care | 2005 |
| Oak Street Cars Ltd | Wholesale & retail | 2011 |
| Oakleigh Drive Management Company Ltd | Households | 2002 |
| Ofast Limited | Wholesale & retail | 1985 |
| OFF Holdings Limited | Financial services | 2022 |
| OJS Home Care Ltd | Construction | 2026 |
| Old OS Limited | Administrative & support | 2002 |
| One Vision Limited | Professional & scientific | 1996 |
| Orchard Commercials Limited | Wholesale & retail | 2021 |
| Orchard House Property Management Limited | Hospitality | 2005 |
| Orec Group Ltd | Real estate | 2025 |
| Organic Food Certification Limited | Extraterritorial | 2024 |
| Organic Food Federation | Administrative & support | 2000 |
| Ostoya Accountancy Limited | Professional & scientific | 2025 |
| Ostoya Digital Solution Ltd | Information & communication | 2026 |
| Outsec Services Ltd | Administrative & support | 2014 |
| Overtons Coachpainters Limited | Professional & scientific | 2002 |
| Oxydise Wellness LAB Limited | Health & social care | 2024 |
| Oysterblue Limited | Information & communication | 2021 |
| P Dennis Limited | Construction | 2002 |
| P'S Market Garden Limited | Agriculture & fishing | 2020 |
| PA Services East Anglia Limited | Administrative & support | 2025 |
| Palamedes Media Group Ltd | Professional & scientific | 2010 |
| Patient Transport Vehicles Ltd | Manufacturing | 2025 |
| Peacefold Limited | Real estate | 1985 |
| Peanuts Pups Limited | Agriculture & fishing | 2026 |
| Peddars Rise Residents Limited | Households | 2014 |
| Pells Q a Services Limited | Administrative & support | 2023 |
| Perry Hall Limited | Construction | 2000 |
| Peter Lord Joinery Limited | Manufacturing | 2025 |
| Peter Lord LLP | | 2024 |
| PFS2 Holdings Limited | Professional & scientific | 2007 |
| Phoenix Group (Europe) Limited | Wholesale & retail | 1996 |
| Phoenix Heating and Plumbing (Norfolk) Limited | Construction | 2026 |
| Phoenix Homecare (Norfolk) Ltd | Health & social care | 2011 |
| PIG Management Systems Ltd | Professional & scientific | 2010 |
| Pipton Properties Ltd | Real estate | 2016 |
| Pitfield on Pitfield Ltd | Hospitality | 2011 |
| Platinum Club Racing Ltd | Arts & recreation | 2024 |
| PM Clinical Quality Consulting Limited | Professional & scientific | 2019 |
| Policy Shift Limited | Information & communication | 2025 |
| Port Financial Services Ltd | Financial services | 2020 |
| Portfolio 7 Ltd | Real estate | 2023 |
| PPN Norwich Ltd | Education | 2023 |
| Premium Interiors Limited | Construction | 2020 |
| Premonition Analytics Limited | Information & communication | 2015 |
| Prestige Plumbing and Heating (Norfolk) Ltd | Construction | 2017 |
| Pride Virtual PA Services Limited | Administrative & support | 2011 |
| Prime Contact Communications Limited | Professional & scientific | 2002 |
| Profectus Business Consulting Limited | Professional & scientific | 2017 |
| Profectus Coaching Ltd | Professional & scientific | 2018 |
| Professional Cabling Solutions Limited | Information & communication | 2006 |
| Projects Corporate Treasury Ltd | Administrative & support | 2023 |
| Promenade Leisure Company (Hunstanton) Limited | Hospitality | 2004 |
| Promenade Leisure Company (Hunstanton) T/A M J Large Ice Cream Limited | Wholesale & retail | 2008 |
| Provision Catering Europe Limited | Hospitality | 1998 |
| Pumpkin Consultants Limited | Information & communication | 2012 |
| Pungleperry's Limited | Hospitality | 2022 |
| Purfleet Limited | Real estate | 2012 |
| Pyro Sure Ltd | Construction | 2025 |
| Quick Asphalt Limited | Administrative & support | 2024 |
| Qwest Norfolk Ltd. | Manufacturing | 2016 |
| R & I Builders Holding Ltd | Financial services | 2019 |
| R & I Builders Ltd. | Construction | 1996 |
| R & R Properties and Renovations Limited | Construction | 2016 |
| R O'Neil Builders Limited | Construction | 2013 |
| R Sarkar Limited | Health & social care | 2015 |
| R.C. Trading Ltd | Construction | 1997 |
| Raingear Irrigation Limited | Agriculture & fishing | 2003 |
| Rajas Investments Limited | Real estate | 2012 |
| Ratcliffe Hall Limited | Professional & scientific | 1998 |
| Razor & Tape Limited | Information & communication | 2019 |
| RDJ Groundworks EA Ltd | Construction | 2025 |
| RDS Stove Installations Limited | Construction | 2024 |
| Reflections Aesthetics Clinic Ltd | Professional & scientific | 2020 |
| Regal CFM Limited | Administrative & support | 2014 |
| Regal International Holdings Ltd | Financial services | 2022 |
| Renewables Consulting Limited | Professional & scientific | 2007 |
| Resiglass Ltd | Construction | 2022 |
| Resilient Training Solutions Ltd | Education | 2018 |
| Reubjon Limited | Arts & recreation | 2010 |
| Reusd Ltd | Wholesale & retail | 2022 |
| Revolution Group Ltd | Professional & scientific | 2006 |
| Risk Revolution Ltd | Professional & scientific | 2006 |
| RJB Automation Limited | Construction | 2022 |
| RLC Anglia Limited | Administrative & support | 2021 |
| RLS Computer Services Limited | Information & communication | 2013 |
| Rmccs Norfolk Ltd | Transport & logistics | 2021 |
| RMG Contracting Ltd | Construction | 2025 |
| Room to Breathe Norfolk CIC | Administrative & support | 2026 |
| Rooms With a View Ltd | Wholesale & retail | 2013 |
| Roser Developments Limited | Construction | 2022 |
| Rowan Estates (Norfolk) Ltd | Construction | 2016 |
| Rowe Brothers Repair Services Limited | Manufacturing | 2012 |
| Rudd Build Limited | Construction | 2010 |
| Rule of Thirds Limited | Information & communication | 2025 |
| Rural Compliance Solutions Ltd | Professional & scientific | 2019 |