| 106 Drayton Bridge Road Limited | Households | 2022 |
| 12 OT LLP | | 2025 |
| 24/7 Sports Radio Limited | Information & communication | 2022 |
| 287 Westbourne Park Road Limited | Households | 1991 |
| 2WPP Distributions Limited | Wholesale & retail | 2015 |
| 3 Peaks Bunkroom Limited | Hospitality | 2017 |
| 3 Peaks Cycles Ltd | Wholesale & retail | 2016 |
| 327W Ltd | Financial services | 2026 |
| 4-XTRA Technologies Limited | Information & communication | 2021 |
| 4KXL LLP | | 2015 |
| 8GLASS Ltd | Administrative & support | 2022 |
| 981 Properties Ltd | Real estate | 2022 |
| A & G Trade Plastic and Glass Limited | Manufacturing | 2011 |
| A & M Butteree Ltd | Construction | 2011 |
| A & W Tool Hire Limited | Administrative & support | 1984 |
| A C Mortgages Yorkshire Ltd | Financial services | 2025 |
| A C Rowland Limited | Construction | 2003 |
| A H and S Roofing Limited | Construction | 2026 |
| A J Hart Accountants Limited | Professional & scientific | 2018 |
| A Jackson Properties Ltd | Real estate | 2021 |
| A M Holdings 26 Limited | Real estate | 2025 |
| A Metcalf Limited | Construction | 2001 |
| A Radford Holdings Ltd | Financial services | 2023 |
| A&G (ROE) Property Ltd | Real estate | 2025 |
| A&H Bistro Limited | Hospitality | 2021 |
| A.J.Montgomerie Ltd | Financial services | 2022 |
| A.R. Briggs & Co. Limited. | Real estate | 1971 |
| A.T. LEE Properties Limited | Construction | 2000 |
| A2Z Dental Limited | Health & social care | 2015 |
| AA Anodising UK Ltd | Manufacturing | 2010 |
| Absolute 2 Design Consultants Limited | Professional & scientific | 2016 |
| AC Consulting Services Limited | Information & communication | 2017 |
| Ace Subsea Inspection Services Ltd | Mining & quarrying | 2022 |
| Acornley Orthopaedics Limited | Health & social care | 2019 |
| Acra Screed Limited | Manufacturing | 2005 |
| Acre North Yorkshire Ltd | Construction | 2021 |
| Acre Wood Day Nursery Limited | Education | 2007 |
| ACT Build Change Ltd | Information & communication | 2019 |
| Acwa Services Limited | Water & waste | 1986 |
| AD and SA Ltd | Transport & logistics | 2013 |
| Adams Tebb Ilkley Limited | Construction | 2007 |
| Addingham IT Ltd | Information & communication | 2017 |
| Addison Planning Consultants Limited | Professional & scientific | 2014 |
| Adele Adams Associates Limited | Education | 2003 |
| Adkin & Sons Building Developments Ltd | Construction | 2022 |
| Adkin Holding Group Ltd | Financial services | 2022 |
| Adnc Projects (Holdings) Limited | Real estate | 2022 |
| Adnc Projects Limited | Construction | 2016 |
| Adriadventures Ltd | Administrative & support | 2019 |
| Adtec Software Limited | Information & communication | 1999 |
| Advanced Leisure Management Ltd. | Education | 2017 |
| AEG Joinery Limited | Construction | 2023 |
| AEO Plumbing,Heating & Electrical Ltd | Manufacturing | 2016 |
| AER Construction Development Ltd | | 2007 |
| AF Bars Ltd | Hospitality | 2022 |
| Aggletree Holdings Limited | Professional & scientific | 2021 |
| Agora Business Publications LLP | | 2006 |
| AHA Thinking Ltd | Education | 2026 |
| Ahernes of Hellifield (Yorkshire) Limited | Wholesale & retail | 2007 |
| Aigentic Ltd | Information & communication | 2025 |
| AIM Listing Limited | Information & communication | 2007 |
| Airborne Adventures Limited | Arts & recreation | 1988 |
| Aire & Wharfe Roofing Limited | Construction | 2019 |
| Aire Valley Accountants Ltd | Administrative & support | 2009 |
| Aire Valley Construction Ltd | Construction | 2010 |
| Aire Valley Garden Centre Ltd | Wholesale & retail | 2012 |
| Aire Valley Group Ltd | Professional & scientific | 2026 |
| Aire Valley Professional Services Ltd | Professional & scientific | 2012 |
| Aire Valley Services Ltd | Construction | 2014 |
| Airedale Electrical Services (Skipton) Ltd. | Real estate | 1995 |
| Airedale Tree Surgeons Limited | Agriculture & fishing | 2002 |
| Aivora Systems Ltd | Wholesale & retail | 2026 |
| AJ Evans Trading Ltd | Wholesale & retail | 2026 |
| AJ Stove & Heating Installations Ltd | Construction | 2024 |
| AJM Business Systems Ltd | Information & communication | 2018 |
| Alan Mudd Construction Ltd | Construction | 2013 |
| Alan Northrop Limited | Manufacturing | 1962 |
| Albion 2026 Ltd | Hospitality | 2026 |
| Albus & Flora Limited | Wholesale & retail | 2013 |
| Alchemy Construction Limited | Construction | 2009 |
| Alex Brown Trading Ltd | Wholesale & retail | 2016 |
| ALL Square Finance Limited | Financial services | 2012 |
| ALL Things Therapy Centre Ltd | Health & social care | 2021 |
| All-R-Shore Ventures Limited | Wholesale & retail | 2024 |
| Allcourt Sports Ltd | Wholesale & retail | 2016 |
| Allsignage Ltd | Manufacturing | 2007 |
| Altitude Drivers Club Ltd | Other services | 2022 |
| Altus Capital Ltd | Professional & scientific | 2023 |
| Alwazzan Property Services UK Limited | Construction | 2015 |
| Amber Homeloans Limited | Professional & scientific | 1993 |
| Ambience Venue Styling North Yorkshire Ltd | Other services | 2022 |
| Ambitions Gymnastics Ltd | Education | 2018 |
| Amelia's Kitchen Limited | Hospitality | 2014 |
| AMT Art Limited | Wholesale & retail | 2024 |
| AMT Trading Limited | Wholesale & retail | 2015 |
| AND What About YOU? Ltd | Education | 2025 |
| Anderson Leisure LLP | | 2013 |
| Andrew Clark Models Ltd | Wholesale & retail | 2023 |
| Andy Lambert Limited | Construction | 2008 |
| Andy Mudd Consulting Ltd | Professional & scientific | 2024 |