| 10 Denmark Villas Hove Limited | Administrative & support | 1998 |
| 111 South Coast Road Management Limited | Households | 2025 |
| 24 Foot Square Ltd | Information & communication | 2011 |
| 26B Friars Avenue Residents Company Limited | Households | 2009 |
| 3G Contract Cleaning Limited | Administrative & support | 2013 |
| 3S Investments Ltd | Professional & scientific | 2016 |
| 41 Goldhurst Terrace Ltd | Households | 2024 |
| 45 Portland Road Hove Limited | Households | 2020 |
| 4BOUYS Inns Limited | Hospitality | 2002 |
| 55 Surrenden House Residents Association Limited | Households | 2000 |
| 7 Bonchurch Road Brighton Management Limited | Households | 2017 |
| 70ABC the Promenade Company Limited | Households | 2009 |
| 777REFORM Ltd | Arts & recreation | 2025 |
| 77A Montpelier Road Brighton Management Company Limited | Real estate | 1989 |
| 85 ST. Helens Road Management Company Limited | Households | 2020 |
| 85-85A Dursley Road RTM Company Limited | Households | 2007 |
| A Palmer Maintenance and Landscaping Ltd | Administrative & support | 2020 |
| Aaab Property Developments Ltd | Construction | 2023 |
| Abacus Property Maintenance Ltd | Construction | 2002 |
| Abbey Close 1966 Limited | Extraterritorial | 2014 |
| Abbeystone Support Limited | Extraterritorial | 2014 |
| Abundant Light Chapel | Other services | 2009 |
| Acoustic Solutions Ltd | Construction | 2015 |
| Addpush Limited | Real estate | 1996 |
| Advanced Compliance Technology, Ltd | Information & communication | 2024 |
| Affinity Rowing Club C.I.C. | Arts & recreation | 2020 |
| Affordable Cars of Sussex Ltd | Wholesale & retail | 2015 |
| AI Agile Blueprint Ltd | Information & communication | 2024 |
| Akri Ltd | Information & communication | 2024 |
| Algutis Medical Ltd | Manufacturing | 2022 |
| Alina's Cleaning Service Ltd | Administrative & support | 2015 |
| Alina's Domestic Service Ltd | Administrative & support | 2019 |
| ALL Made With Love Ltd | Wholesale & retail | 2020 |
| Alphabetty Books Ltd | Information & communication | 2022 |
| Altrex Wholesale Ltd | Wholesale & retail | 2026 |
| Aluminium Extrusions Online Limited | Extraterritorial | 2022 |
| Amaiva Care Group Ltd | Health & social care | 2023 |
| Amirox Ltd | Administrative & support | 2025 |
| Anchor Garage (Peacehaven) Limited | Wholesale & retail | 2011 |
| Andrew John Taylor Limited | Manufacturing | 2025 |
| Andrew Moxon Construction Limited | Extraterritorial | 2013 |
| Andy the Builder Limited | Construction | 2010 |
| APW Site Management Ltd | Professional & scientific | 2024 |
| Arkalith Ltd | Information & communication | 2024 |
| Arnold Beck Property Management Ltd | Real estate | 2025 |
| Ashington Stores Ltd | Wholesale & retail | 2018 |
| Ask.Elec Limited | Construction | 2014 |
| Atom Technology Ltd | Manufacturing | 2021 |
| AU Jewels & Co Ltd | Manufacturing | 2024 |
| Aurora HR Ltd | Administrative & support | 2024 |
| Aziz Food Ltd | Hospitality | 2024 |
| B&H Roofing and Building Ltd | Construction | 2025 |
| B.E.C. Lettings Limited | Real estate | 2021 |
| B.E.C. Networks Limited | Information & communication | 1999 |
| B.Kilinc Limited | Health & social care | 2021 |
| B1 Plastering Ltd | Construction | 2026 |
| Baber Properties Limited | Real estate | 1988 |
| Bachatera Agency Ltd | Health & social care | 2022 |
| Badger Merch Ltd | Wholesale & retail | 2021 |
| Bailey Power Services Ltd | Construction | 2020 |
| Baller Grades Ltd | Arts & recreation | 2025 |
| Bando Chwedl CIC | Arts & recreation | 2024 |
| Banjul Cleaning Services Ltd | Administrative & support | 2023 |
| Barden GAS Services Limited | Construction | 2015 |
| Barn Brew Ltd | Hospitality | 2025 |
| Barnwell-Collins Ltd. | Other services | 2015 |
| Basewood Recruitment Ltd | Administrative & support | 2024 |
| BE Inspired Academy Ltd | Other services | 2024 |
| Belfie Estates Ltd | Real estate | 2025 |
| Benla Limited | Other services | 2012 |
| Berrisford Hills Associates Ltd | Arts & recreation | 2022 |
| Berts Barber Ltd | Other services | 2024 |
| Best Plumbing & Heating Limited | Construction | 2017 |
| Bickbricks Ltd | Real estate | 2017 |
| Billou Limited | Real estate | 2025 |
| Bites Catering Ltd | Hospitality | 2024 |
| Black Cocoa Patisserie Limited | Manufacturing | 2018 |
| Blackwell Accountancy Limited | Professional & scientific | 2026 |
| BLB Mechanical Services Limited | Construction | 2021 |
| Blooberry Creative Ltd | Professional & scientific | 2021 |
| Bloomfields Care Ltd | Health & social care | 2021 |
| Blue Skies Brighton Limited | Construction | 2020 |
| BN Accounts Limited | Professional & scientific | 2022 |
| BN Building Contractors Limited | Construction | 2018 |
| BN Energy Assessor Ltd | Households | 2020 |
| BN Property Services Limited | Real estate | 2016 |
| Bn-Consultants Ltd | Professional & scientific | 2023 |
| BN1 Cleaning Co Ltd | Administrative & support | 2019 |
| Bnpropertyholdings Limited | Real estate | 2016 |
| Bodyfirst Limited | Other services | 2011 |
| Boostbery Limited | Administrative & support | 2016 |
| Boran Maintenance Limited | Households | 2023 |
| Born in the Cloud Ltd | Information & communication | 2022 |
| Bowry Electrical Ltd | Construction | 2024 |
| Brambletyne Ltd | Information & communication | 2014 |
| Brand New Theatre Productions Ltd | Extraterritorial | 2021 |
| Brandvaultuk Ltd | Financial services | 2026 |
| Brian Marshall & Sons Limited | Real estate | 2011 |
| Brighten UP Electrics Ltd | Construction | 2023 |
| Brighton & Sussex Theological College Limited | Extraterritorial | 2012 |