| 09831784 Limited | Construction | 2015 |
| 17 ND Limited | Administrative & support | 2009 |
| 2TO1 Consulting Limited | Information & communication | 2021 |
| 4G Marketing Ltd | Professional & scientific | 2012 |
| 58 Plimsoll Road Limited | Professional & scientific | 1997 |
| 5865 Limited | Professional & scientific | 2023 |
| A & C Developments (UK) Ltd | Construction | 2014 |
| A L Testing Services Limited | Construction | 2014 |
| A Welding Services Limited | Other services | 2019 |
| A4 Athletics Limited | Wholesale & retail | 2024 |
| AB Alex Ltd | Construction | 2024 |
| Ace Business Services Limited | Extraterritorial | 1998 |
| Adare Close Management Company Limited | Households | 2019 |
| Adhesives Research Limited | Wholesale & retail | 1997 |
| Advance Physiotherapy Limited | Health & social care | 2024 |
| Advanced Equine Limited | Professional & scientific | 2011 |
| AGR Manufacturing Ltd | Manufacturing | 2001 |
| Agri-Tech Organic Solutions Limited | Agriculture & fishing | 2014 |
| Aikou KER Limited | Health & social care | 2022 |
| Aimee Sadler Fitness Limited | Arts & recreation | 2021 |
| Ajca Developments Limited | Real estate | 2020 |
| Alan Fell Consultancy Limited | Professional & scientific | 1996 |
| Alsa Leasing Ltd | Real estate | 2023 |
| Andrew Stevenson Associates Limited | Professional & scientific | 2003 |
| Andrewsfield Aviation Limited | Arts & recreation | 1993 |
| Andrewsfield Flying School Limited | Arts & recreation | 1991 |
| Anglia Decor Limited | Construction | 2010 |
| Anglia Industrial Roofing Limited | Construction | 2026 |
| Appetite Pubs Ltd | Hospitality | 2024 |
| Apple Green Developments Limited | Construction | 2015 |
| Apple Green Homes (W.Mortimer) Ltd | Construction | 2026 |
| Arctech Limited | Information & communication | 2011 |
| Arke Capital Partners LLP | | 2017 |
| Art House International Limited | Extraterritorial | 1996 |
| Ashridge Electrical Contractors Limited | Construction | 2011 |
| Atkins PMC Limited | Extraterritorial | 2012 |
| Atkins Technologies Limited | Professional & scientific | 2013 |
| Auction Court Management Company Limited | Real estate | 2010 |
| Avant (South East) Limited | Wholesale & retail | 2020 |
| Aviad Global Limited | Wholesale & retail | 2019 |
| Awecapital Limited | Professional & scientific | 2021 |
| Awecommercial Limited | Administrative & support | 2025 |
| Axis Pathways Education Limited | Education | 2026 |
| Ayabelle Limited | Extraterritorial | 2012 |
| B&R Group Holdings Limited | Financial services | 2026 |
| B.M Financials Limited | Financial services | 2015 |
| B24 Hub (Ashby) Limited | Professional & scientific | 2018 |
| B24 Hub (New Cross) Limited | Professional & scientific | 2020 |
| B24HUB (AB) Limited | Professional & scientific | 2018 |
| B24HUB (TW) Limited | Professional & scientific | 2019 |
| B24HUB Limited | Professional & scientific | 2017 |
| Backworks - Back & Neck Pain Clinic Ltd | Other services | 2001 |
| Bartletts Farm Logs Limited | Agriculture & fishing | 2025 |
| Beechwood Publications Limited | Manufacturing | 1983 |
| Bell Street Investments Limited | Real estate | 1991 |
| Benfleet Builders Warehouse Limited | Wholesale & retail | 2023 |
| Berewood Limited | Wholesale & retail | 2004 |
| Bfit Personal Training Limited | Health & social care | 2019 |
| Bickners Farm Limited | Agriculture & fishing | 1968 |
| Bishop Green Logistics Ltd | Transport & logistics | 2025 |
| Bizzfest Ltd | Administrative & support | 2024 |
| BJG Consultancy Services Limited | Administrative & support | 2017 |
| BKF Carwash UK Ltd | Manufacturing | 2025 |
| Black & Gold Developments Limited | Construction | 2015 |
| Blaisdon Management Company Limited | Real estate | 1974 |
| Blue Group Collective Limited | Transport & logistics | 2013 |
| Blueprint SET Services Limited | Construction | 2026 |
| Blueriver Faclities Managment Ltd | Agriculture & fishing | 2023 |
| Boarded Barns Investments Limited | Real estate | 2026 |
| Bobavia Limited | Transport & logistics | 2009 |
| Bold Property Limited | Professional & scientific | 2005 |
| Boldbookx Finance Ltd | Professional & scientific | 2022 |
| Bondgrip Limited | Agriculture & fishing | 2013 |
| Booma Restaurants Limited | Hospitality | 2016 |
| Boxed Business Hub Limited | Transport & logistics | 2023 |
| Boxed Storage Ltd | Real estate | 2020 |
| Braefield Engineering Ltd | Manufacturing | 1967 |
| Bread and Butter Kebab Limited | Hospitality | 2024 |
| Brook Street Butchers Ltd | Wholesale & retail | 2021 |
| BRP Associates Limited | Professional & scientific | 2007 |
| BRS Electrical London Limited | Manufacturing | 2016 |
| Bubbles & Bluebells Photography Limited | Professional & scientific | 2026 |
| Bubbles Pet Care Limited | Professional & scientific | 2016 |
| Build Safe Building Control Limited | Other services | 2024 |
| Buildings Farm Management Company Ltd. | Households | 2012 |
| Business Education Events CIC | Education | 2012 |
| C Macdonald Associates Ltd | Administrative & support | 2023 |
| C&T Property Company Limited | Real estate | 2021 |
| CAJ Consulting Ltd | Information & communication | 2019 |
| Campbell (Dunmow) Holdings Ltd | Financial services | 2021 |
| Campion Electrics Limited | Construction | 1972 |
| Carnaquidden Property Limited | Real estate | 2025 |
| Carnation Classics Limited | Real estate | 2025 |
| CB Biomass Limited | Manufacturing | 2016 |
| CBC Venture Solutions Ltd | Financial services | 2024 |
| Chalkway Limited | Financial services | 2020 |
| Chaser Leisure Limited | Wholesale & retail | 2018 |
| Chatt & Bird Limited | Professional & scientific | 2020 |
| Chelmer Builders Limited | Construction | 2022 |
| Chelmer Interiors Limited | Construction | 2023 |