| 1-2 Achieve Ltd | Education | 2021 |
| 100% Suspension Limited | Wholesale & retail | 2003 |
| 117 High Street King's Lynn Flat Management Company Limited | Households | 1993 |
| 13-12 Ltd | Real estate | 2005 |
| 180 Properties Ltd | Construction | 2025 |
| 33 Holdings Limited | Professional & scientific | 2016 |
| 33 WR Holdings Ltd | Financial services | 2019 |
| 360 Health and Safety Limited | Professional & scientific | 2025 |
| 37 Norwich Road Limited | Construction | 2014 |
| 4QUADRANT Delivery Limited | Professional & scientific | 2021 |
| 5/6 Norfolk Street Ltd | Construction | 2020 |
| A and P Properties (Suffolk) Limited | Real estate | 2024 |
| A T Nurse & Sons Limited | Financial services | 2020 |
| A-Cubed Limited | Real estate | 2008 |
| A.R. Wilson Plant Hire Limited | Administrative & support | 1978 |
| A.S.K. Builders (King's Lynn) Limited | Construction | 2022 |
| A1 Accountants & Tax Advisors Limited | Professional & scientific | 2010 |
| Abacus Accountancy Services (East Anglia) Ltd | Professional & scientific | 2010 |
| Above ALL Images Limited | Arts & recreation | 2014 |
| Absolute Mortgages (UK) Ltd | Financial services | 2014 |
| Accio Consult and Construct Limited | Construction | 2015 |
| Acorn Seeds Limited | Agriculture & fishing | 2008 |
| Acton Engineering (Norfolk) Limited | Manufacturing | 2024 |
| Advanced Talent Strategies Limited | Professional & scientific | 2022 |
| Aeternus Associates Limited | Financial services | 2024 |
| AG Window Cleaners Ltd | Administrative & support | 2025 |
| Alan Homes (Norfolk) Limited | Real estate | 2007 |
| ALL Round Property Roofing Maintenance Limited | Construction | 2024 |
| Ambern Systems Ltd | Information & communication | 2019 |
| Andy Ward Illustration Ltd | Professional & scientific | 2010 |
| Anglian Development Consultants Ltd | Professional & scientific | 2011 |
| Anyone CAN DO IT Ltd | Arts & recreation | 2004 |
| APV Computers Limited | Other services | 2008 |
| Arborfore Ltd | Agriculture & fishing | 2013 |
| ARC Developments (East) Ltd | Construction | 2026 |
| Arkas FM Limited | Construction | 2023 |
| ARTELLI42 Limited | Information & communication | 2018 |
| Ashton Roberts Estate Agents Limited | Real estate | 2013 |
| Ashton Roberts Limited | Real estate | 2011 |
| Ashtree Group Limited | Financial services | 2020 |
| ASK Mummy & Daddy Ltd | Wholesale & retail | 2018 |
| Assured Renders Ltd | Construction | 2014 |
| Atdc Limited | Health & social care | 2024 |
| Atelier DE Lumièr Online Shop Ltd | Wholesale & retail | 2025 |
| Atlantisgroundworks Limited | Manufacturing | 2026 |
| ATM Architectural Consulting Limited | Professional & scientific | 2011 |
| Aulsett Limited | Information & communication | 2023 |
| Auspex Ventures Ltd | Manufacturing | 2012 |
| Autopickr Ltd | Professional & scientific | 2022 |
| Ayres Enterprises Limited | Real estate | 2026 |
| B Boyd Services Ltd | Professional & scientific | 2022 |
| Backbyte Limited | Information & communication | 2020 |
| Baileys Pet Supplies Ltd | Wholesale & retail | 2023 |
| Barrow Builders Ltd | Construction | 2021 |
| Baughen Ltd | Construction | 2019 |
| Baven Furniture Limited | Other services | 2023 |
| BE Rescued (Business) Consulting Limited | Professional & scientific | 2014 |
| Bearts Holdings Limited | Financial services | 2024 |
| Beds of Paradise Limited | Wholesale & retail | 2009 |
| Beech House Accountancy Services Limited | Professional & scientific | 1999 |
| Bees Motors Limited | Real estate | 2011 |
| BES Vacations Ltd | Hospitality | 2025 |
| Bespoke Paraplanning Ltd | Financial services | 2024 |
| Best Bitez Limited | Hospitality | 2022 |
| BFI Consultancy Limited | Professional & scientific | 2018 |
| BHC Indicator Limited | Administrative & support | 2017 |
| Billboard Media Limited | Professional & scientific | 2026 |
| Bishop Renovations Ltd | Construction | 2025 |
| Bishop Travel Ltd | Transport & logistics | 2024 |
| BK Carpentry Ltd | Manufacturing | 2026 |
| Black Robe Limited | Information & communication | 2009 |
| Blackridge Property Maintenance Ltd | Construction | 2026 |
| Blackthorn Arable Limited | Professional & scientific | 2000 |
| BMD Holdings EA Ltd | Financial services | 2023 |
| BMG Securities Ltd | Professional & scientific | 2024 |
| Boomrealm International Limited | Mining & quarrying | 2007 |
| Boston Seeds (NO.2) Limited | Extraterritorial | 2016 |
| Bourton Cottages Management Company Limited | Real estate | 2003 |
| Bovic Services Ltd | Construction | 2023 |
| BPS Equipment Limited | Wholesale & retail | 2008 |
| Branwell Projects Limited | Construction | 2025 |
| Brendan James (Norfolk) Limited | Hospitality | 2017 |
| Broomhill Plumbing and Heating Ltd | Construction | 2024 |
| Bryan Cater Limited | Administrative & support | 2008 |
| Busseys Removal Services Limited | Transport & logistics | 2025 |
| Buy Women Built Limited | Administrative & support | 2021 |
| C Venni Engineering Limited | Professional & scientific | 2025 |
| Cambridge Electrical Contractors Ltd | Construction | 2019 |
| Cambs Brickwork Ltd | Construction | 2024 |
| Carers El!Te Limited | Administrative & support | 2021 |
| Carlton Downs (Holdings) Limited | Real estate | 1980 |
| Carritas Building Contractors Ltd | Construction | 2025 |
| Carsul Limited | Professional & scientific | 1999 |
| CB Mediatech Ltd | Professional & scientific | 2023 |
| CC & PM Management Company Limited | Households | 2009 |
| Cdstn Medical Limited | Health & social care | 2013 |
| Ce-Est Limited | Administrative & support | 2022 |
| Century Services (UK) Ltd | Administrative & support | 2005 |
| Charlie John Ltd | Information & communication | 2018 |
| Charlotte Dhabha Limited | Health & social care | 2012 |