| 7 Telecommunications Limited | Information & communication | 2010 |
| 70 Foxwell Drive (Headington) Management Company Limited | Households | 2020 |
| 72 Nuffield Road Limited | Households | 2010 |
| 74 Asquith Road (Oxford) Management Company Limited | Households | 2016 |
| 76 Kennington Road Management Limited | Professional & scientific | 1987 |
| 78 Oliver Road (Oxford) Management Company Limited | Real estate | 2003 |
| 79 Stanway Road (Headington) Management Company Limited | Extraterritorial | 2004 |
| 7DJ Ltd | Professional & scientific | 2019 |
| 8 Clerkenwell Green Limited | Households | 2004 |
| 8 Harpes Road Management Limited | Households | 1992 |
| 8 Marshall Road Management Limited | Households | 2023 |
| 80 Shuttleworth Road Freehold Limited | Households | 2002 |
| 84 Lime Walk Headington Freehold Limited | Households | 2023 |
| 85 James Street (Oxford) Limited | Extraterritorial | 1987 |
| 89/91 Bath Street Rugby RTM Company Limited | Real estate | 2004 |
| 9 Eynsham Road Management Company Limited | Households | 2021 |
| 93 Green Road Headington (Oxford) Management Co Limited | Professional & scientific | 2002 |
| 93DEGREES Ltd | Manufacturing | 2025 |
| 94 Banbury Road Limited | Extraterritorial | 1984 |
| 9501 Barbers Ltd | Other services | 2026 |
| 98 Woodstock Road Management Limited | Households | 1991 |
| 99 Copse Lane (Marston) 2 Management Company Limited | Households | 2020 |
| 9JA Fresh Ltd | Manufacturing | 2025 |
| : Seymour Media Productions Limited | Information & communication | 2023 |
| A & a UK Property Limited | Hospitality | 2020 |
| A & E Plumbing Oxford Ltd | Construction | 2026 |
| A ALI Properties Limited | Hospitality | 2015 |
| A Amin & a Sami Ltd | Real estate | 2023 |
| A Bold New Story Limited | Real estate | 2026 |
| A Branigan Consulting Limited | Professional & scientific | 2014 |
| A Glass of Red Please Ltd | Hospitality | 2024 |
| A Grice Contracting Limited | Professional & scientific | 2025 |
| A H N Heating & Electrical Ltd | Construction | 2019 |
| A I Dent Ltd | Health & social care | 2023 |
| A LEE Services Limited | Real estate | 2019 |
| A PAY Limited | Health & social care | 2010 |
| A Reiss Holding Ltd | Real estate | 2018 |
| A S Brickwork (Oxford) Ltd | Construction | 2018 |
| A Sinani Home Improvements Ltd | Construction | 2024 |
| A Studio Bruce Limited | Construction | 2024 |
| A T Thurai & Co Limited | Hospitality | 2000 |
| A to Z Cafe Ltd | Hospitality | 2024 |
| A to Z Plumbing and Drainage Ltd | Construction | 2025 |
| A Vital Life Limited | Extraterritorial | 2020 |
| A W Johnson Ltd | Health & social care | 2016 |
| A W Mobbs & Co Limited | Wholesale & retail | 2009 |
| A&A Automotive Ltd | Wholesale & retail | 2024 |
| A&A Crust Co Ltd | Hospitality | 2025 |
| A&G Catering Ltd | Hospitality | 2022 |
| A&G Security and Events Limited | Administrative & support | 2017 |
| A&L Decorating Oxford Ltd | Construction | 2017 |
| A&L Electrical Ltd | Construction | 2025 |
| A&P68 Ltd | Real estate | 2020 |
| A&T H Ltd | Real estate | 2023 |
| A&T Syndicate Ltd | Wholesale & retail | 2022 |
| A&V Banbury Supermarket Ltd | Wholesale & retail | 2025 |
| A&V Barton Supermarket Ltd | Wholesale & retail | 2025 |
| A&Z Houses Ltd | Construction | 2018 |
| A'Dil Limited | Professional & scientific | 2018 |
| A-1 Taxis Limited | Transport & logistics | 2014 |
| A-Zan Consultancy Ltd | Professional & scientific | 2007 |
| A. Lomas Limited | Financial services | 1953 |
| A. R. Smith Builders Limited | Construction | 1999 |
| A.C. Nielsen Company Limited | Professional & scientific | 1996 |
| A.G MCM Property Limited | Real estate | 2026 |
| A.G.W. Limited | Construction | 1991 |
| A.L.N. Heating Limited | Manufacturing | 2003 |
| A.M Consulting & Help Ltd | Professional & scientific | 2025 |
| A.N.P. Raceworks Ltd | Manufacturing | 2021 |
| A.R.A Property Portfolio Ltd | Real estate | 2023 |
| A.Singh Ltd | Real estate | 2023 |
| A.W. Clarke (Engineering) Limited | Manufacturing | 1966 |
| A1 Dispenser Ltd | Wholesale & retail | 2025 |
| A1 Quality Decorators Limited | Construction | 2001 |
| A1 Services (Oxford) Limited | Construction | 1996 |
| A2 Partners Limited | Information & communication | 2020 |
| A29 Archaeology Ltd | Professional & scientific | 2025 |
| A2Z Construction 2025 Ltd | Construction | 2026 |
| A2ZEE Trading Limited | Wholesale & retail | 2022 |
| A4 Hire Limited | Administrative & support | 2001 |
| A@1 Builders Limited | Construction | 2022 |
| AA Contracting Group Ltd | Extraterritorial | 2025 |
| AA Pharmaceuticals Ltd | Other services | 2021 |
| AA Physiotherapy Ltd | Other services | 2025 |
| AAA Double Glazing Ltd | Manufacturing | 2025 |
| AAA Games Ltd | Information & communication | 2012 |
| AAA Oxford Short Lets Ltd | Hospitality | 2017 |
| AAA Worldwide Consulting Ltd | Professional & scientific | 2024 |
| AAM Oxford Cars Ltd | Wholesale & retail | 2023 |
| Aama Private Limited | Hospitality | 2023 |
| Aamm Properties Ltd | Real estate | 2024 |
| Aanw Anaesthetics Limited | Health & social care | 2019 |
| Aare Labs Ltd | Financial services | 2025 |
| Aaronaahrya Limited | Wholesale & retail | 2024 |
| AAV Ltd | Health & social care | 2020 |
| AB Builders Ltd | Construction | 2020 |
| AB99ENTERPRISE Ltd | Hospitality | 2024 |
| Ababeel Corp Ltd | Hospitality | 2025 |
| Abapere IT Oxford Limited | Information & communication | 2019 |
| Abbee Ltd. | Manufacturing | 2024 |