| Nima Consultancy Limited | Professional & scientific | 2014 |
| NN Psychology Ltd | Health & social care | 2023 |
| NO. 12 Management Company Limited | Households | 2021 |
| Norcombe Court Management Company Limited | Households | 1990 |
| Northcott Building Contractors Ltd. | Construction | 2001 |
| Norton Green Investments | Financial services | 2023 |
| Nurture in Psychology Ltd | Health & social care | 2025 |
| Oak Park Holdings Ltd | Real estate | 2020 |
| Oakleaf Holdings Limited | Hospitality | 2013 |
| OB44 Limited | Real estate | 2022 |
| Ocean View Management Co (SW) Ltd | Households | 2024 |
| Office Services (Exeter) Limited | Administrative & support | 2003 |
| Oldaker Psychology Ltd | Health & social care | 2023 |
| One Step Renovation Ltd | Real estate | 2015 |
| Oneco Ltd | Professional & scientific | 2015 |
| Onslow Court Homes Limited | Households | 2015 |
| OP Maintenance Ltd | Real estate | 2022 |
| Opimian Limited | Professional & scientific | 2010 |
| Orca Solutions Limited | Professional & scientific | 2014 |
| Orchard Holiday Caravans Limited | Hospitality | 2007 |
| Orchard House Trading Limited | Financial services | 2024 |
| Original Gravity Event Bars Ltd | Wholesale & retail | 2021 |
| Orinvest Limited | Financial services | 2019 |
| Ossulton Way Flats Limited | Professional & scientific | 2005 |
| Otterton Mews Management Company Limited | Real estate | 2005 |
| OUT of the Ashes Film Limited | Information & communication | 2026 |
| P B Home Solutions Limited | Wholesale & retail | 2006 |
| Paddock View (Mytchett) Management Company Limited | Households | 2008 |
| Panaderia Atbp Ltd | Wholesale & retail | 2022 |
| Paperchain (Seaton) Ltd | Wholesale & retail | 2014 |
| Park Psychology Services Limited | Health & social care | 2021 |
| Party Wall Surveying Limited | Professional & scientific | 2017 |
| Paul Bristow Marine Services Ltd | Professional & scientific | 2024 |
| Paywall Productions Limited | Information & communication | 2026 |
| PB D&C Ltd | Health & social care | 2025 |
| PDA Compass Ltd | Health & social care | 2026 |
| Penarth Property Ltd | Real estate | 2020 |
| Pharmasitch Ltd | Wholesale & retail | 2022 |
| Philip Bruce Psychotherapy Limited | Health & social care | 2025 |
| Picture House Management Limited | Households | 2003 |
| Pinehurst Financial Services Limited | Professional & scientific | 2014 |
| Pinehurst Property Services Ltd | Hospitality | 2019 |
| Pinewood Psychology Ltd | Health & social care | 2024 |
| Pink Hippo Day Nursery & Pre-School Limited | Health & social care | 2015 |
| PJD Farming Limited | Agriculture & fishing | 2020 |
| Playdome Limited | Arts & recreation | 2005 |
| Polaris Guitars Limited | Extraterritorial | 2020 |
| Polychrome Court Freeholders Company Limited | Households | 2008 |
| Portcullis Alarms Limited | Extraterritorial | 2017 |
| Portman Property Management Ltd | Real estate | 2018 |
| Power Cable Project Solutions Limited | Professional & scientific | 2019 |
| Precision Waterjet Limited | Manufacturing | 2006 |
| Precision Waterjet Services Ltd | Extraterritorial | 2022 |
| Primrose Retail Ltd | Wholesale & retail | 2022 |
| Pristine Deep Cleaning Company Ltd | Administrative & support | 2024 |
| Pro-Active Mechanical & Electrical Maintenance Ltd. | Construction | 2004 |
| Procurement Business Solutions Limited | Real estate | 2007 |
| Property Kitchen Ltd | Real estate | 2021 |
| Psychology With AMY Ltd | Health & social care | 2022 |
| Psyconline Consulting Ltd | Health & social care | 2023 |
| Pure Sage Holidays Ltd | Real estate | 2024 |
| Purple Shark Limited | Education | 2015 |
| Pygmalion and Funck Ltd | Wholesale & retail | 2020 |
| Qianrou Limited | Manufacturing | 2025 |
| Queen's Court Colyton Management Limited | Administrative & support | 2003 |
| Quest Inns Holdings Ltd | Extraterritorial | 2017 |
| Quest Inns Ltd | Hospitality | 2012 |
| Quex Court Limited | Households | 2000 |
| R J Mchardy Developments Ltd | Construction | 2015 |
| R J Mchardy Ltd | Construction | 2015 |
| R W Dack & Sons Ltd | Construction | 2014 |
| R&M IT Solutions Limited | Information & communication | 2013 |
| R.G.Francis & Co (Ascot) Limited | Construction | 1956 |
| RA & JA Reed & Sons Limited | Agriculture & fishing | 2025 |
| Radio and T V Components (Acton) Limited | Real estate | 1947 |
| Rakhit Capital Ltd | Real estate | 2019 |
| RAM JAM Music Limited | Arts & recreation | 2013 |
| Ratio Plastic Models Limited | Extraterritorial | 1976 |
| RDH Ltd | Real estate | 2025 |
| Re:Store AXE Valley CIC | Health & social care | 2020 |
| Redstar Capital Ltd. | Other services | 2006 |
| Reel Digital Ltd. | Financial services | 2007 |
| Regency Windows Ltd | Construction | 2013 |
| Regents Mews (Camden) Management Company Limited | Households | 1995 |
| Resonate Psychology Ltd | Health & social care | 2022 |
| Retrac Consultancy Services Ltd | Professional & scientific | 2002 |
| Retreat Estates Ltd | Real estate | 2023 |
| Rhodes Green Limited | Professional & scientific | 2021 |
| Ridgeway Property Management Company Limited | Real estate | 2007 |
| Ripon House Flat Management Company Limited | Households | 1987 |
| Rivermead (Seaton) Management Company Limited | Other services | 2007 |
| Rivers House RTM Company Ltd | Households | 2010 |
| Rochester House Ealing Limited | Households | 2009 |
| Rock Farm Management Company Limited | Households | 1991 |
| Rock Point Inn Limited | Real estate | 2005 |
| Roger Adams Construction Ltd. | Construction | 1997 |
| Rolle Court Management Limited | Households | 2004 |
| Rose Bruford College Creek Road (Greenwich) Management Company Limited | Households | 2004 |
| RP Lyme Regis Limited | Manufacturing | 2017 |
| RPM Motor Services Limited | Wholesale & retail | 2006 |