| A to B Removals Limited | Transport & logistics | 2001 |
| A to Z Carpet & Flooring Limited | Wholesale & retail | 2020 |
| A to Z Construction Law Ltd | Education | 2010 |
| A W Construction (Midlands) Ltd | Construction | 2016 |
| A W Custom Design Limited | Professional & scientific | 1985 |
| A W Rigging Limited | Construction | 2018 |
| A Walters & Sons Limited | Transport & logistics | 2010 |
| A Wright Plumbing & Heating Services Limited | Construction | 2014 |
| A Wright Property Limited | Real estate | 2016 |
| A YIP Trading Limited | Real estate | 2011 |
| A&A Property (Kent) Limited | Real estate | 2021 |
| A&A Soft TEC Ltd | Information & communication | 2013 |
| A&A Transit Ltd | Transport & logistics | 2024 |
| A&A Trucking Limited | Transport & logistics | 2024 |
| A&B Roofing & Building Limited | Construction | 2018 |
| A&C Education Limited | Education | 2017 |
| A&Co Solicitors Limited | Professional & scientific | 2025 |
| A&D Driveways Ltd | Construction | 2023 |
| A&E Freight & Customs Ltd | Transport & logistics | 2022 |
| A&G Truck Trailer Hire Limited | Administrative & support | 2024 |
| A&H Rehman Properties Ltd | Real estate | 2023 |
| A&I Real Estate Limited | Real estate | 2025 |
| A&J Enterprises Ltd | Real estate | 2023 |
| A&J Transit Ltd | Transport & logistics | 2021 |
| A&K Developments (Midlands) Limited | Real estate | 2016 |
| A&K Property Investments Ltd | Real estate | 2024 |
| A&M Apex Medics Limited | Health & social care | 2026 |
| A&M D'S Limited | Arts & recreation | 2021 |
| A&P Consulting (Derby) Limited | Professional & scientific | 2026 |
| A&R Bros Limited | Wholesale & retail | 2024 |
| A&R Development Derby Ltd | Construction | 2020 |
| A&R Estate Management Ltd | Real estate | 2023 |
| A&R Smiles Ltd | Other services | 2026 |
| A&S Food Services Limited | Hospitality | 2025 |
| A&S Mechanical Limited | Construction | 2005 |
| A&S Poultry Limited | Wholesale & retail | 2019 |
| A&T Clothing Limited | Wholesale & retail | 2025 |
| A&T Corp Limited | Manufacturing | 2023 |
| A&T Haulage Limited | Transport & logistics | 2019 |
| A'Liyah Aesthetics Limited | Other services | 2020 |
| A'Liyah Chair Rentals Limited | Administrative & support | 2021 |
| A'S Food Lounge Limited | Wholesale & retail | 2025 |
| A'S Prestige Cars Ltd | Manufacturing | 2024 |
| A-Game Agility Ltd | Other services | 2025 |
| A-List Recruitment Ltd | Administrative & support | 2021 |
| A-Mty FEA Ltd | Professional & scientific | 2024 |
| A-Secure Electronic Security Ltd | Administrative & support | 2025 |
| A-Stefan Ltd | Transport & logistics | 2018 |
| A. a .Gausu Ltd Ltd | Manufacturing | 2023 |
| A. B. Cholerton Limited | Construction | 1983 |
| A. C. Farnsworth Limited | Financial services | 2003 |
| A. Carter Electrical Limited | Construction | 2001 |
| A. Hewitt & Sons Builders Limited | Construction | 2003 |
| A.1.S. Plumbing & Heating Services Ltd | Construction | 2013 |
| A.B. Camp Contractors Limited | Construction | 1986 |
| A.Boddington Limited | Manufacturing | 2019 |
| A.C.E. Stainless Fabrications Limited | Other services | 2007 |
| A.D. Land Consultancy Limited | Professional & scientific | 2006 |
| A.E.J Property Investments Ltd | Real estate | 2025 |
| A.H Group Services Ltd | Construction | 2025 |
| A.J Motors Derby Limited | Wholesale & retail | 2019 |
| A.J. Allen Frics Limited | Financial services | 2008 |
| A.J. Property Investments Limited | Extraterritorial | 1999 |
| A.J.Carlier & Sons Limited | Transport & logistics | 1957 |
| A.J.P Courier Services Ltd | Transport & logistics | 2025 |
| A.K.Management Consultants Limited | Construction | 2004 |
| A.M Sports (Midlands) Ltd | Administrative & support | 2023 |
| A.M. Annison Maintenance Services Ltd | Other services | 2017 |
| A.M. Property Services (Derby) Limited | Construction | 2006 |
| A.M.Housley Design Ltd | Professional & scientific | 2018 |
| A.Moss Family Butchers Ltd | Wholesale & retail | 2021 |
| A.Okoye Limited | Administrative & support | 2019 |
| A.Ostry Ltd | Transport & logistics | 2018 |
| A.R.D Windows Doors and Home Improvement Ltd | Construction | 2025 |
| A.Rai Holdings Ltd | Real estate | 2025 |
| A.S. Engineering (Derby) Ltd. Ltd | Professional & scientific | 2019 |
| A.S. Thompson Limited | Construction | 1989 |
| A.S.L Skip and Grab Hire Ltd | Water & waste | 2025 |
| A.Smith Planning & Control Limited | Professional & scientific | 2012 |
| A.W.ROBEY(1965)LIMITED | Other services | 1965 |
| A1 Builders (Midlands) Limited | Construction | 2017 |
| A1 Builders UK Limited | Construction | 2019 |
| A1 BUK Ltd | Real estate | 2025 |
| A1 Clutches Derby (UK) Limited | Wholesale & retail | 2014 |
| A1 Derby UK Limited | Construction | 2021 |
| A1 Design Innovations Ltd | Professional & scientific | 2024 |
| A1 Driving Academy Limited | Education | 2022 |
| A1 Hair and Beauty Limited | Wholesale & retail | 2018 |
| A1 Homes Derby Limited | Real estate | 2024 |
| A1 Linen Textiles Limited | Other services | 2019 |
| A1 Market Store Limited | Wholesale & retail | 2025 |
| A1 Mechanics & Repairs Ltd | Wholesale & retail | 2025 |
| A1 Surveyors Ltd | Professional & scientific | 2024 |
| A1 Taxis Derby Ltd | Transport & logistics | 2024 |
| A1LESTREE Travel Ltd | Transport & logistics | 2013 |
| A2 Facades Limited | Construction | 2019 |
| A2 Trade Ltd | Wholesale & retail | 2024 |
| A2B Asset Group Limited | Real estate | 2025 |
| A2B Kitchens Ltd | Wholesale & retail | 2022 |
| A2D Systems Limited | Professional & scientific | 2024 |