| 19 Seventysix Ltd | Professional & scientific | 2026 |
| 1ST Response Recovery Limited | Administrative & support | 2008 |
| 202CONSTRUCTION Limited | Construction | 2010 |
| 2C Digs Limited | Real estate | 2024 |
| 2C Engineers Limited | Professional & scientific | 2024 |
| 2C Group Limited | Professional & scientific | 2024 |
| 2C Machines Limited | Wholesale & retail | 2024 |
| 4TH Peak Ltd | Professional & scientific | 2022 |
| 9AM Saint Ltd | Wholesale & retail | 2022 |
| A & K LEE Ltd | Wholesale & retail | 2023 |
| A B Home Rental Limited | Real estate | 2024 |
| A Proper Yorkshire Builder Ltd | Other services | 2024 |
| A TAD Delicious Ltd | Hospitality | 2018 |
| A&A Fencing Ltd | Construction | 2015 |
| A&K Houses Ltd | Real estate | 2025 |
| ACD Auto Ltd | Wholesale & retail | 2019 |
| ACJ Developments Limited | Construction | 1985 |
| Acorn Driver Limited | Transport & logistics | 2019 |
| Adam Hawkins Limited | Construction | 2019 |
| Advance Stocks Limited | Administrative & support | 2003 |
| Advanced Fasteners Limited | Manufacturing | 2003 |
| Advocate Technology Ltd | Information & communication | 2026 |
| Aesthetically Trained Limited | Health & social care | 2016 |
| Aesthetically Trained Merchandise Limited | Health & social care | 2020 |
| Aesthetically Trained Personal Training Limited | Health & social care | 2020 |
| Agrimech Farming Ltd | Agriculture & fishing | 2000 |
| Ajec London Limited | Professional & scientific | 2018 |
| AJT Property&Maintenance Ltd | Construction | 2026 |
| AK Sewing Machines Ltd | Wholesale & retail | 2023 |
| Aldborough and Boroughbridge Agricultural Show Limited | Professional & scientific | 2014 |
| Alhenilorium Ltd | Administrative & support | 2021 |
| ALL4KARE Limited | Health & social care | 2025 |
| Allgood Drainage & Plumbing Ltd | Water & waste | 2019 |
| Allroad Autocare Ltd | Wholesale & retail | 2017 |
| Alpas Pro Ltd | Information & communication | 2024 |
| Alphenaloreth Ltd | Transport & logistics | 2021 |
| Alru Ltd | Professional & scientific | 2020 |
| ALS Holdings Limited | Real estate | 2015 |
| Amara Fashions Limited | Wholesale & retail | 2011 |
| Ambh Holdings Limited | Professional & scientific | 2024 |
| Amies-King Consulting Limited | Professional & scientific | 2018 |
| Ammeg Ltd | Other services | 2023 |
| Anderson of Horsforth Ltd | Transport & logistics | 2017 |
| Andrew Mallinson Property Management Limited | Construction | 2009 |
| Andrew Scott Electrical Limited | Construction | 2010 |
| Aosi FM Ltd | Construction | 2024 |
| Apexelite Media Ltd | Professional & scientific | 2023 |
| Aphrodite Tanning & Beauty Salon Ltd | Other services | 2004 |
| Appleyard Property Management Ltd | Real estate | 2024 |
| Apps Craft Ltd | Information & communication | 2025 |
| Arkline Limited | Administrative & support | 2008 |
| Arnold Bateson Homes Limited | Construction | 2021 |
| Arundale Haynes Wood Ltd | Hospitality | 2026 |
| Ascendi Furniture Ltd | Wholesale & retail | 2016 |
| Ascendi Holdings Limited | Financial services | 2023 |
| Ashdale UK Limited | Financial services | 2004 |
| Ashendale Holdings Limited | Financial services | 2025 |
| Ashton Builders Ltd | Construction | 2025 |
| Ashton Wood Services Ltd | Construction | 2019 |
| ASN (North Yorkshire) Limited | Financial services | 2025 |
| Asset Wisdom Limited | Education | 2013 |
| Assured Industrial Doors Limited | Construction | 2003 |
| Auroratek Limited | Information & communication | 2022 |
| Axiom CE Limited | Professional & scientific | 2022 |
| Azure Tree Services Limited | Administrative & support | 2016 |
| B K Parnaby Builders Limited | Construction | 2025 |
| B.C.F.Transport Co.Limited | Real estate | 1953 |
| B.G. Sampson (Farms) Limited | Agriculture & fishing | 1982 |
| Barry Jones Consulting Limited | Professional & scientific | 2018 |
| Bartles Ltd | Administrative & support | 2013 |
| Barwick Construction Limited | Construction | 2014 |
| Beaufort Land Limited | Real estate | 2022 |
| Beechgrove Maintenance Limited | Households | 1986 |
| BEN Gillam Fencing &Groundworks Limited | Administrative & support | 2017 |
| Beyond Borders Solutions Limited | Professional & scientific | 2017 |
| Big Box Buildings Ltd | Construction | 2019 |
| Big Little Stories Ltd | Administrative & support | 2026 |
| Bilbrough Holdings Limited | Financial services | 2012 |
| Birklee Bookkeeping Ltd | Professional & scientific | 2019 |
| Blocktext Limited | Real estate | 1998 |
| Blucher UK Limited | Wholesale & retail | 1978 |
| Blue Torch Investments Limited | Real estate | 2017 |
| Blythe Holdings Limited | Real estate | 2020 |
| BM Stainless Steel Drains Limited | Professional & scientific | 2001 |
| Bolton Game Farm Limited | Administrative & support | 2003 |
| Boston and Hawthorne Ltd | Hospitality | 2024 |
| Boston Power Ltd | Extraterritorial | 2016 |
| Boston Property Consultancy Ltd | Households | 2024 |
| Bowman Arboriculture Limited | Administrative & support | 2019 |
| BP AG Services Ltd | Agriculture & fishing | 2024 |
| BPE Europe Conveyor Solutions Limited | Manufacturing | 2008 |
| Bradley Woods Management Company (NO.3) Limited | Households | 1990 |
| Brafferton Consulting Limited | Professional & scientific | 2021 |
| Brandsoul Limited | Professional & scientific | 2023 |
| Brave North Ltd | Professional & scientific | 2022 |
| Bridge Private Hire Ltd | Transport & logistics | 2017 |
| Broken Bridge Tadcaster Limited | Hospitality | 2025 |
| Bromets Jackson Heath LLP | | 2007 |
| Burger's Buildings Limited | Real estate | 2011 |
| Busk Lane Residents Company Limited | Households | 1998 |