| 1A Devonshire Terrace Limited | Extraterritorial | 2010 |
| A C Premier Foods UK Ltd | Wholesale & retail | 2019 |
| A Hendriks Limited | Administrative & support | 2012 |
| AB & Tax Services Ltd | Professional & scientific | 2013 |
| Adam's Pest Control Ltd | Administrative & support | 2015 |
| Adastrum Limited | Administrative & support | 2006 |
| Adaurum Limited | Financial services | 2004 |
| Advantage Osaa Limited | Education | 2026 |
| Advantage Sports Group Limited | Wholesale & retail | 2019 |
| Aeroh Ltd | Information & communication | 2012 |
| Aerotherm Limited | Manufacturing | 2023 |
| Africancollection.Art Ltd | Wholesale & retail | 2020 |
| Alchemy Pharmatech Limited | Professional & scientific | 2012 |
| Alisam Moves Ltd | Information & communication | 2019 |
| Alpha Customs & Cleans Ltd | Other services | 2021 |
| Alvina Wholesale Ltd | Wholesale & retail | 2019 |
| Amanda Sasada Ltd | Education | 2014 |
| Amoke SCD Ltd | Education | 2020 |
| AMY Wright Makeup Limited | Other services | 2014 |
| Anders Estate Management Limited | Real estate | 2019 |
| Anders Mechanical Services Ltd | Construction | 2020 |
| Andrew D Mcdonnell Holdings Limited | Financial services | 2026 |
| Andrew D Mcdonnell Limited | Health & social care | 2013 |
| Annabelle DE Souza Limited | Real estate | 2018 |
| Anne Marie Chiasson Ltd | Professional & scientific | 2014 |
| Anntara Limited | Real estate | 2000 |
| Anntara Management Limited | Professional & scientific | 2007 |
| Anntara Property 02 Limited | Hospitality | 2025 |
| Aquascreen Ltd | Extraterritorial | 2011 |
| Aquatherm International Ltd | Manufacturing | 2007 |
| Aquavision Music Ltd | Wholesale & retail | 2002 |
| Arbhaus Limited | Professional & scientific | 2000 |
| ARC Sports Performance Ltd | Education | 2026 |
| Aston Park Law Limited | Professional & scientific | 2020 |
| Aston Park Residents' Association Limited | Households | 2015 |
| Athena Coaching and Education Ltd | Education | 2026 |
| Aztec Plant Services Limited | Construction | 2014 |
| B & N Oxfordshire Limited | Real estate | 2016 |
| Babylon Design Limited | Administrative & support | 2000 |
| Babylon Flowers Ltd | Other services | 2023 |
| Babylon Maintenance Ltd | Administrative & support | 2013 |
| Babylon Plants Ltd | Agriculture & fishing | 2014 |
| Bakers Limited | Hospitality | 2002 |
| Balksbury Company Limited | Wholesale & retail | 1993 |
| Bare Knuckle Films Limited | Administrative & support | 2012 |
| Barefoot Bumpkin Ltd | Manufacturing | 2026 |
| BB Special Projects Ltd | Professional & scientific | 2024 |
| Bell Vehicle Services Limited | Wholesale & retail | 2016 |
| Bella Luce Ltd | Wholesale & retail | 2015 |
| BIC Property Limited | Real estate | 2024 |
| Black Swan Advisory Ltd | Professional & scientific | 2025 |
| Blastoff GB Ltd | Construction | 1984 |
| Bolton International Consultancy Limited | Professional & scientific | 2015 |
| Bombus ARB Tree Care Ltd | Agriculture & fishing | 2022 |
| BOY OUT the City Ltd | Arts & recreation | 2023 |
| Branded Sky Ltd | Administrative & support | 2010 |
| Bray Manor Limited | Households | 2025 |
| Breadsong CIC | Manufacturing | 2023 |
| Britwell Salome Farm Shop Limited | Wholesale & retail | 2008 |
| Brook Street Watlington (Flats) Management Company Limited | Real estate | 2000 |
| Brook Street Watlington (Garages) Management Company Limited | Real estate | 2000 |
| Brook Street Watlington Management Limited | Real estate | 2002 |
| Brookmont Ltd | Real estate | 2020 |
| Brushing OUT the Curls Film Ltd | Information & communication | 2021 |
| C&S White Property Ltd | Real estate | 2021 |
| CAB Glass Doors Ltd | Manufacturing | 2018 |
| Caire Assist Limited | Information & communication | 2023 |
| Cardid Ltd | Information & communication | 2021 |
| Carroll & Partners (Surveyors) Ltd | Professional & scientific | 2003 |
| Cdgm Building and Property Services Limited | Construction | 2018 |
| Celeste Events Ltd | Hospitality | 2025 |
| Certain X Limited | Manufacturing | 2015 |
| Charlett Brickwork Limited | Extraterritorial | 2019 |
| Cheetham Village Investments LP | | 2004 |
| Chestnut Place Residents Association Limited | Extraterritorial | 2004 |
| Christopher REA Ltd | Agriculture & fishing | 2025 |
| Church Farm Lewknor (Management) Ltd | Administrative & support | 2010 |
| City Wide Serviced Apartments Limited | Real estate | 2019 |
| CKE Property Limited | Administrative & support | 2013 |
| Claire Basden Ltd | Education | 2013 |
| Classic CUT Barber Shop Ltd | Other services | 2026 |
| CMH Consulting Limited | Other services | 2024 |
| Cognitive Procurement Ltd | Administrative & support | 2017 |
| Color Cloud Trade Ltd | Wholesale & retail | 2024 |
| Contingency Management Innovations Ltd | Information & communication | 2009 |
| Copse END Property Residents Management Company Limited | Households | 2008 |
| Couching House Property Management Company Ltd | Households | 2018 |
| Court Close Management Company Limited | Real estate | 2009 |
| CP Crown International Ltd | Construction | 2016 |
| CP Crown Ltd | Construction | 2016 |
| Crabtree House Limited | Households | 2021 |
| Crest Consultancy Oxon Ltd | Professional & scientific | 2024 |
| Crosk Construction Ltd | Construction | 2024 |
| Crown Bi-Fold Doors Ltd | Construction | 2017 |
| Crown Investments International Ltd | Real estate | 2022 |
| Crown Pavilions Limited | Construction | 2006 |
| CX Global Exhibitions & Events Ltd | Manufacturing | 2025 |
| Cygnet Automotive Ltd | Wholesale & retail | 2018 |
| Cygnet Cottage Properties Limited | Real estate | 2021 |
| D & E Plastics Limited | Manufacturing | 1994 |