| B L Wright Carpentry Ltd | Construction | 2025 |
| B Wayne Windows Limited | Construction | 2023 |
| B&W Pursuits Ltd | Arts & recreation | 2021 |
| B.A.T.M. (U.K.) Limited | Professional & scientific | 1994 |
| B.B.C.C.F (1951) Ltd | Real estate | 2025 |
| B2SEE Video Ltd | Information & communication | 2016 |
| B4BOOKKEEPING Limited | Professional & scientific | 2014 |
| Babynov Chichester Limited | Manufacturing | 2019 |
| Back Then Festival Limited | Arts & recreation | 2025 |
| Back Yard Coffee Ltd | Manufacturing | 2016 |
| Backstage Wellness Ltd | Professional & scientific | 2025 |
| Bagnall Holding Co. Limited(The) | Administrative & support | 1951 |
| Bailey's Bumblebees Ltd | Health & social care | 2021 |
| Bake@Russells Ltd | Hospitality | 2023 |
| Bakery Mews Management Company Limited | Households | 2017 |
| Bakose Holdings Limited | Financial services | 2012 |
| Bakose Limited | Hospitality | 2007 |
| Bakrajo Chichester Ltd | Wholesale & retail | 2025 |
| Bald Builders Ltd | Information & communication | 2018 |
| Bald Properties Ltd | Real estate | 2019 |
| Balidor Limited | Agriculture & fishing | 2006 |
| Ballcrown Limited | Information & communication | 1999 |
| Bally Consultancy Limited | Professional & scientific | 2012 |
| Ballysadare Limited | Professional & scientific | 2016 |
| Balog’S Maintenance and Landscaping Ltd | Construction | 2023 |
| Bambooze Ltd | Manufacturing | 2025 |
| Banbury Walker Limited | Information & communication | 2009 |
| Barbers Chichester Limited | Other services | 2022 |
| Barf Time Ltd | Other services | 2026 |
| Barkingham Palace GUN Dogs Ltd | Agriculture & fishing | 2020 |
| Barle Impact Limited | Financial services | 2026 |
| Barle Limited | Professional & scientific | 2003 |
| Barleycorn Tavern Limited | Hospitality | 2017 |
| Barn House Lane Management Company Limited | Households | 1987 |
| Barnes Catering UK Ltd | Hospitality | 2025 |
| Barnes Communications Limited | Information & communication | 1997 |
| Barnham Business Solutions Ltd | Financial services | 2014 |
| Barnplat Ltd | Wholesale & retail | 2026 |
| Barnstorm Social Limited | Professional & scientific | 2012 |
| Barretts Accountants Limited | Professional & scientific | 2013 |
| Barrington and Company (Southern) Limited | Real estate | 2024 |
| Barrington Modern Limited | Real estate | 2022 |
| Barry Bedford Roofing Services Ltd | Construction | 2021 |
| Bartholomews (Holdings) Limited | Professional & scientific | 1955 |
| Bartholomews Agri Food Limited | Agriculture & fishing | 1944 |
| Bartholomews Specialist Distribution Limited | Transport & logistics | 1978 |
| Baseline Energy Management Ltd | Professional & scientific | 2018 |
| Bass Properties Limited | Real estate | 2021 |
| Bastion Resilience Ltd | Administrative & support | 2026 |
| Bateman Interiors Ltd | Construction | 2026 |
| Battersea Rise Studios Limited | Health & social care | 2008 |
| Baxendale RD Ltd | Real estate | 2026 |
| Bay and Oaks Ltd | Construction | 2018 |
| Bay Bespoke (Developments) Ltd | Construction | 2025 |
| Baytree Renovations Ltd | Construction | 2008 |
| Bbcn Limited | Real estate | 2013 |
| BBO Dance Supplies Limited | Wholesale & retail | 2000 |
| BC 89 Ltd | Financial services | 2022 |
| BCH Car Hire Limited | Administrative & support | 2012 |
| BCL Corrosion Inspection Services Limited | Professional & scientific | 2019 |
| BCL Services Ltd | Information & communication | 2017 |
| Bctc Electrical Limited | Construction | 2019 |
| BD Gynaecology Ltd | Health & social care | 2025 |
| BDD Marine Ltd | Manufacturing | 2025 |
| Bdevious Ltd | Information & communication | 2016 |
| BE Ditto Ltd | Information & communication | 2025 |
| BE Found in Your Town International Ltd | Professional & scientific | 2026 |
| BE Found in Your Town Ltd | Professional & scientific | 2024 |
| Be:Poised Pilates Ltd | Health & social care | 2024 |
| BEA Property Ltd | Real estate | 2017 |
| Beachkey Limited | Hospitality | 2001 |
| Beachview Freeholders Limited | Households | 2011 |
| Beacon House Psychological Services Limited | Health & social care | 2014 |
| Beacon House Therapeutic Services and Trauma Team Limited | Health & social care | 2017 |
| Beadsley Holdings Ltd | Financial services | 2025 |
| Beagle Limited | Professional & scientific | 2004 |
| Beagle Weston Ltd | Health & social care | 2014 |
| Beam BUG Limited | Health & social care | 2015 |
| Beaming Cleaning Limited | Administrative & support | 2022 |
| Bear Bones Enterprises Limited | Information & communication | 2026 |
| Bearded Cactus Consulting Limited | Information & communication | 2023 |
| Beare Violins Limited | Administrative & support | 1954 |
| Beaumont Select Limited | Administrative & support | 1995 |
| Beautiful Gardens & Lawn Care Ltd | Administrative & support | 2011 |
| Beautiful Marine Floors Limited | Administrative & support | 2013 |
| Beauty First (Sussex) Limited | Other services | 2007 |
| Beaver Toilet Hire Limited | Administrative & support | 2021 |
| Beaver Tool Hire (Chichester) Limited | Administrative & support | 1977 |
| Becat Holdings Ltd | Real estate | 2022 |
| Beck Athlete Management Ltd | Administrative & support | 2023 |
| Becktech Limited | Manufacturing | 1985 |
| Bedford Greyfriars Regeneration Company Limited | Real estate | 2020 |
| Bedrock Drilling Consultancy Ltd | Mining & quarrying | 2010 |
| Bedrock Drilling Limited | Mining & quarrying | 2012 |
| BEE Bespoke Build Ltd | Construction | 2026 |
| Beech Tree Childcare Limited | Health & social care | 2014 |
| Beech Tree Property Investments Ltd | Construction | 2022 |
| Beechdown Arboriculture Limited | Agriculture & fishing | 2005 |
| Beechdown Tree Consultancy Ltd | Agriculture & fishing | 2025 |
| Beechdown Trees Limited | Agriculture & fishing | 2025 |