| 1 Media Limited | Information & communication | 2006 |
| 100 Church Street Lancaster Limited | Households | 2022 |
| 12 Oxford Avenue Limited | Real estate | 2016 |
| 18D Properties Limited | Real estate | 2022 |
| 1ST Event Solutions Limited | Administrative & support | 2008 |
| 2 SAN Global Holdings Ltd | Financial services | 2021 |
| 27 Castle Hill (Lancaster) Limited | Hospitality | 2008 |
| 2SAN Global Limited | Wholesale & retail | 2020 |
| 2SEETV Ltd | Wholesale & retail | 2003 |
| 3DP Properties Ltd | Construction | 2022 |
| 3DP Property Partnership LLP | | 2026 |
| 4 Seasons Hire Limited | Administrative & support | 2013 |
| 44 Media House Ltd | Professional & scientific | 2024 |
| 6D Digital Limited | Professional & scientific | 2012 |
| A & a Garden Care Limited | Water & waste | 2003 |
| A & W Commercials Limited | Wholesale & retail | 1991 |
| A C Price (Engineering) Limited | Manufacturing | 1994 |
| A F Consulting (Northern) Limited | Administrative & support | 2009 |
| A J Nails Ltd | Other services | 2024 |
| A&A Landscaping and Groundcare Ltd | Construction | 2009 |
| A.& T.Sharpe Properties Ltd | Real estate | 2019 |
| A.T. Livestock Ltd | Agriculture & fishing | 2024 |
| A2B Locksmiths Limited | Construction | 2002 |
| Abacus Creative Resources Ltd | Wholesale & retail | 2022 |
| Abbeyfield Silverdale Society | Health & social care | 2017 |
| Abbeyhorn Limited | Manufacturing | 2000 |
| Absolute Right Limited | Professional & scientific | 2006 |
| Absolutely Right Limited | Real estate | 2004 |
| Ace Electrical and Alarms Ltd | Administrative & support | 2017 |
| Ace Infra Ltd. | Construction | 2017 |
| Acomb Financial Research Limited | Professional & scientific | 2009 |
| Actionscript Solutions Ltd | Information & communication | 2008 |
| Acutus Financial Solutions Ltd | Professional & scientific | 2018 |
| Adam Carr Builders Holdings Limited | Financial services | 2019 |
| Adam Carr Builders Ltd | Construction | 2010 |
| Adam's Decorators Ltd | Construction | 2020 |
| Adamson Rentals Ltd | Real estate | 2022 |
| Adept Energy Limited | Other services | 2024 |
| Admin [Bytes] (Barton) Limited | Administrative & support | 2018 |
| Adventure Breaks Group Limited | Arts & recreation | 2020 |
| Adventure Legends Ltd | Administrative & support | 2025 |
| Adventure Makers Ltd | Arts & recreation | 2025 |
| Adventure Motor Vehicles Limited | Wholesale & retail | 2019 |
| Aerial Access Limited | Extraterritorial | 2006 |
| Affittare Ltd | Real estate | 2025 |
| AG Auto Services (Morecambe) Ltd | Wholesale & retail | 2023 |
| AGR Developments Ltd | Real estate | 2024 |
| Agri-Plant SV Limited | Wholesale & retail | 2007 |
| AH Plumbing & Heating Ltd | Construction | 2025 |
| Aiguille Limited | Manufacturing | 2001 |
| AIK Dental Ltd | Health & social care | 2024 |
| AIK Property Holdings Ltd | Real estate | 2026 |
| Ajenw Holdings Limited | Real estate | 2012 |
| AJL Communications Limited | Information & communication | 2020 |
| AJR Northwest Limited | Agriculture & fishing | 2007 |
| AL Smith Ltd | Information & communication | 2017 |
| Alan Firth Limited | Arts & recreation | 2003 |
| Alan Moulsdale Limited | Professional & scientific | 2002 |
| Alerta Systems Ltd | Administrative & support | 2021 |
| Alex Willan Cars Limited | Wholesale & retail | 2007 |
| Alexm Project Management Services Ltd | Real estate | 2018 |
| Aligeo Holding Limited | Real estate | 2015 |
| ALL Ceramic Solutions Limited | Manufacturing | 2007 |
| ALL Sudz External Cleaning Services Ltd | Administrative & support | 2022 |
| ALL Sudz Ltd | Administrative & support | 2010 |
| Allied Axiom Ltd | Professional & scientific | 2016 |
| Altcompany Limited | Extraterritorial | 2025 |
| Altibrew Ltd | Wholesale & retail | 2024 |
| Alto CIM Services Ltd. | Wholesale & retail | 2004 |
| Always Spring Clean Ltd | Administrative & support | 2015 |
| Amanda Askew Ltd | Professional & scientific | 2025 |
| Ames Consulting Ltd | Professional & scientific | 2021 |
| AMP Health Partners Limited | Health & social care | 2026 |
| Ampersand 8 Limited | Professional & scientific | 2016 |
| Amrt Consult Limited | Professional & scientific | 2012 |
| Ancestral Property Limited | Real estate | 2024 |
| Andrew KAY Sculpture Limited | Arts & recreation | 2014 |
| Andrew Thompson Holdings Limited | Financial services | 2022 |
| Angles Hair Salon Limited | Other services | 2015 |
| Animal Crew Ltd | Arts & recreation | 2015 |
| Anne Murray Accountants Limited | Professional & scientific | 2015 |
| Anthony and Graham Chaplow Landscaping Limited | Administrative & support | 2007 |
| Anwellhouse Accountancy Services Ltd | Professional & scientific | 2014 |
| APD Leisure and Marketing Europe Limited | | 2009 |
| APD Leisure and Marketing Group Europe Limited | | 2009 |
| Apex Pickleball Ltd | Arts & recreation | 2026 |
| Apparatus Limited | Professional & scientific | 2008 |
| Apple Blossom Ltd | Financial services | 2023 |
| Apple Designs Limited | Wholesale & retail | 2008 |
| Apples & Pears Stairs Limited | Manufacturing | 2025 |
| Apsv Coatings Ltd | Manufacturing | 2020 |
| Arcadia Landscapes Ltd | Administrative & support | 2023 |
| Archbishop Hutton Sole-Trustee Company Limited | Professional & scientific | 2022 |
| Arkholme Good Times Limited | Hospitality | 2013 |
| Arkholme Water Processing Limited | Water & waste | 2010 |
| Armistead European Transport Limited | Transport & logistics | 2002 |
| Armstrong Brown Ventures Ltd | Real estate | 2022 |
| Arnside National Church of England School | Education | 2011 |
| Asbestos Cleaning UK Ltd | Water & waste | 2026 |
| Ascot & Ryley LLP | | 2013 |