| 00145493 Limited | Manufacturing | 1916 |
| 007SD SM Limited | Energy | 2025 |
| 01315545 Limited | Professional & scientific | 1977 |
| 07271389 Limited | Administrative & support | 2010 |
| 100% Forever Limited | Extraterritorial | 2015 |
| 101 Autism & Adhd Assessments Limited | Health & social care | 2025 |
| 104 Holdings UK Ltd | Real estate | 2022 |
| 142AR69SV Limited | Financial services | 2024 |
| 16 Victoria Place Management Company Limited | Households | 2026 |
| 17181645 Ltd | Other services | 2026 |
| 1ST Advanced Scaffolding Systems Limited | Construction | 2002 |
| 1UP Natural Products Ltd | Manufacturing | 2019 |
| 2 Chevrons Apart Ltd | Hospitality | 2014 |
| 2 of US Studio Limited | Wholesale & retail | 2021 |
| 20SEVEN Limited | Wholesale & retail | 2014 |
| 20TEN Contracts Ltd | Construction | 2025 |
| 24SEVEN Maintenance Services Limited | Other services | 2003 |
| 258 Property Limited | Real estate | 2024 |
| 2COURTSQUARE Limited | Extraterritorial | 2021 |
| 3 Leaf Farming Ltd | Agriculture & fishing | 2024 |
| 316 Fabrications Ltd | Other services | 2020 |
| 37-51 Arrowe Park Road Management Company Limited | Real estate | 2003 |
| 39 Properties Limited | Real estate | 2023 |
| 3B Construction Ltd | Construction | 2003 |
| 3P Ministries | Professional & scientific | 2002 |
| 47 Spencer Street Management Committee Limited | Real estate | 2020 |
| 4D Enterprises (Cumbria) Ltd | Information & communication | 2022 |
| 4LIFE Healthcare Limited | Health & social care | 2017 |
| 5 Agri LLP | | 2017 |
| 5 Rings Enterprises Ltd | Wholesale & retail | 2019 |
| 789 Nation Limited | Wholesale & retail | 2023 |
| 8 Zhang Ltd | Hospitality | 2021 |
| 8THRICE Events Limited | Hospitality | 2025 |
| 8THRICE Property Solutions Ltd | Real estate | 2021 |
| 90-96 South Henry Street (Carlisle) Management Company Limited | Extraterritorial | 1998 |
| 9AQA Limited | Information & communication | 2023 |
| A & D Developments Limited | Construction | 2014 |
| A & D Printers Limited | Professional & scientific | 2006 |
| A & F Monkhouse Limited | Transport & logistics | 2003 |
| A & F Property Rental Ltd | Real estate | 2025 |
| A & J M Forster Ltd | Agriculture & fishing | 2022 |
| A & M Groundwork and Building Ltd | Construction | 2020 |
| A Balfour Engineering Services Ltd | Professional & scientific | 2022 |
| A Brown COW Foot Trimming Limited | Agriculture & fishing | 2024 |
| A Carruthers Design and Build Ltd | Construction | 2025 |
| A Chungs Lucky Limited | Hospitality | 2023 |
| A Dinwoodie Decorating Limited | Construction | 2008 |
| A Etherington Ltd | Professional & scientific | 2025 |
| A Friel Limited | Transport & logistics | 2007 |
| A G Barr Optometrists Limited | Health & social care | 2011 |
| A Hyde & Co Ltd | Real estate | 2025 |
| A J Carr Limited | Construction | 2003 |
| A J Energy Limited | Professional & scientific | 2018 |
| A K News Ltd | Wholesale & retail | 2016 |
| A LEE Engineering Limited | Construction | 2019 |
| A Lightfoot Security Maintenance Limited | Administrative & support | 2004 |
| A M Caravans Carlisle Limited | Wholesale & retail | 2024 |
| A Mcgahan Services Limited | Administrative & support | 2019 |
| A New Kind of Kick LLP | | 2015 |
| A Nobis AD VOS Limited | Real estate | 2018 |
| A S Joinery (Cumbria) Limited | Construction | 2022 |
| A S Teasdale Limited | Wholesale & retail | 2006 |
| A Thomson Limited | Construction | 2023 |
| A W Blake Ltd | Wholesale & retail | 1994 |
| A W Irving Ltd | Construction | 2025 |
| A&E Elite UK Ltd | Wholesale & retail | 2019 |
| A&K Herd Ltd | Financial services | 2017 |
| A&M Property Services Carlisle Ltd | Construction | 2022 |
| A-Z Roofing Limited | Construction | 2011 |
| A-Z Vehicle Dismantlers Limited | Wholesale & retail | 2009 |
| A. Frizell Limited | Administrative & support | 2003 |
| A.H.H.A Investments Ltd | Real estate | 2025 |
| A.L. Daines & Partners LLP | | 2012 |
| A.M. (Cumbria) Limited | Construction | 2008 |
| A.N. Mcguffie Limited | Real estate | 2008 |
| A.P. and J. Brown Ltd | Construction | 1987 |
| AA Carpets Limited | Wholesale & retail | 2000 |
| AA OIL and GAS Shipping Ltd | Professional & scientific | 2024 |
| AA Skip Hire Cumbria Ltd | Water & waste | 2014 |
| AAA Events Limited | Arts & recreation | 2010 |
| Aardvark Research & Development Ltd | Real estate | 2020 |
| Aaron Dean Engineering Ltd | Professional & scientific | 2023 |
| Aaron Woods Joinery Limited | Construction | 2017 |
| Aarr Properties Limited | Real estate | 2024 |
| Aayan Kitchen Limited | Hospitality | 2025 |
| AB Group (Albion) Limited | Manufacturing | 1937 |
| AB Stores IP Limited | Administrative & support | 2017 |
| Ab&Dg Services Limited | Health & social care | 2018 |
| Abbey Roofing & Flat Roofing Limited | Construction | 2018 |
| ABC Properties Cumbria Ltd | Financial services | 2025 |
| ABC Treecare Limited | Agriculture & fishing | 2023 |
| Abcd (Diabetes Care) Limited | Administrative & support | 2010 |
| Abco Windows Limited | Manufacturing | 2002 |
| Aberla Energy Limited | Construction | 2018 |
| Abigail Elliegance Threads Ltd | Wholesale & retail | 2026 |
| Ability Counts Adaptive Fitness CIC | Arts & recreation | 2026 |
| Abkr Holdings (Carlisle) Limited | Financial services | 2021 |
| About Signs Limited | Administrative & support | 2009 |
| Above and Beyond Limited | Construction | 2025 |
| Abraaj Enterprises Ltd | Wholesale & retail | 2026 |