| A.Y. Group Limited | Wholesale & retail | 2016 |
| A1 Appointees Ltd | Administrative & support | 2026 |
| A1 Clean & Comfort (UK) Limited | Administrative & support | 2018 |
| A1 Consultancy Solutions Limited | Professional & scientific | 2024 |
| A1 Dental Recruitment Limited | Administrative & support | 2008 |
| A1 Direct Supplies Ltd | Professional & scientific | 2009 |
| A1 Electrical Wholesalers Limited | Wholesale & retail | 2017 |
| A1 ENT and Eyes Ltd | Health & social care | 2017 |
| A1 Financial Modelling Limited | Professional & scientific | 2011 |
| A1 Haircraft Limited | Other services | 2023 |
| A1 Halal Meat Notts Ltd | Wholesale & retail | 2020 |
| A1 Halal Meats Limited | Wholesale & retail | 2017 |
| A1 INT PVT Ltd | Wholesale & retail | 2024 |
| A1 Locksmiths Limited | Other services | 2002 |
| A1 Medical Aesthetics Ltd | Other services | 2024 |
| A1 Mini-Mix Concrete Limited | Construction | 1998 |
| A1 Mobile Limited | Water & waste | 2001 |
| A1 Nottingham Car Sales Limited | Wholesale & retail | 2020 |
| A1 Pizza & Fish Corner Ltd | Hospitality | 2023 |
| A1 Polymers Limited | Wholesale & retail | 2016 |
| A1 Private Hire Ltd | Transport & logistics | 2020 |
| A1 Publishing Ltd | Information & communication | 2013 |
| A1 Response Yorkshire Ltd | Administrative & support | 2016 |
| A1 Screeds Ltd | Construction | 2017 |
| A1 Secure Fabrications Ltd | Manufacturing | 2014 |
| A1 Shop 24/7 Ltd | Wholesale & retail | 2025 |
| A1-IMPORTS Limited | Transport & logistics | 2011 |
| A12 PJ Limited | Hospitality | 2020 |
| A14 NFB Limited | Manufacturing | 1999 |
| A17 Car Wash Limited | Administrative & support | 2025 |
| A1CLEANNCOMFORT Limited | Administrative & support | 2025 |
| A2 Developments Ltd | Construction | 2007 |
| A2 Driving School Ltd | Education | 2025 |
| A2AI Global Limited | Information & communication | 2024 |
| A2ANYWHERE Ltd | Transport & logistics | 2017 |
| A2B Construction Solutions Limited | Professional & scientific | 2015 |
| A2B Fast Services Ltd | Transport & logistics | 2020 |
| A2B Hire Limited | Administrative & support | 2014 |
| A2B Scaffolding Ltd | Construction | 2023 |
| A2B Therapy CIC | Health & social care | 2025 |
| A2B Transport Services Ltd | Transport & logistics | 2018 |
| A2BFENCINGANDPAVING LLP | | 2025 |
| A2NSTORE Ltd | Wholesale & retail | 2025 |
| A2R Personnel Limited | Administrative & support | 2022 |
| A2RESTRICTORS Ltd | Wholesale & retail | 2026 |
| A2TEC Services Limited | Professional & scientific | 2012 |
| A2Z Bazaar Ltd | Wholesale & retail | 2024 |
| A2Z Computer Support Ltd | Information & communication | 2012 |
| A4S Elite Electrical Engineers and Contractors Limited | Construction | 2022 |
| A4S Elite Relocations Limited | Construction | 2022 |
| A50 Vehicle Movements Ltd | Transport & logistics | 2026 |
| A52 Storage Limited | Households | 2023 |
| A52 Tyre Barn Limited | Wholesale & retail | 2012 |
| A6 Off-License Ltd | Wholesale & retail | 2018 |
| A6K Ltd | Information & communication | 2016 |
| A7 Media Limited | Arts & recreation | 2019 |
| A7CAD Design Engineering Ltd | Professional & scientific | 2019 |
| A8K D Ltd | Transport & logistics | 2025 |
| AA Cars Nottingham Ltd | Wholesale & retail | 2025 |
| AA Commercials Limited | Wholesale & retail | 2026 |
| AA Health & Safety Innovations Limited | Construction | 2024 |
| AA Infinte Store Limited | Wholesale & retail | 2025 |
| AA Medic on Call Ltd | Professional & scientific | 2025 |
| AA Midlands Services Ltd | Transport & logistics | 2025 |
| AA Oncology Services Limited | Health & social care | 2013 |
| AA OPT Ltd | Health & social care | 2025 |
| AA Riaz Limited | Real estate | 2024 |
| AA Sprayers Ltd | Wholesale & retail | 2019 |
| AA Taecan Limited | Other services | 2022 |
| AA Trading Merchants Limited | Wholesale & retail | 2026 |
| AA Travel & Marketing Ltd | Wholesale & retail | 2025 |
| AA2A Limited | Education | 2010 |
| AA7 Holdings Limited | Financial services | 2026 |
| AAA Auto Garages Notts Ltd | Wholesale & retail | 2021 |
| AAA IR Estates Ltd | Real estate | 2024 |
| AAA Motors (Nottingham) Ltd | Wholesale & retail | 2024 |
| AAA Nawaab Limited | Real estate | 2020 |
| AAA Private Hire Shepshed Limited | Transport & logistics | 2008 |
| AAA Supplies Limited | Wholesale & retail | 2025 |
| AAA2Z Rated Products Ltd | Wholesale & retail | 2023 |
| Aaaf Properties Ltd | Real estate | 2015 |
| Aaak Properties Ltd | Real estate | 2026 |
| AAB Maintenance Limited | Administrative & support | 2019 |
| Aabn Investments Ltd | Other services | 2016 |
| AAC Driverhire Limited | Transport & logistics | 2023 |
| Aachr Ltd | Construction | 2023 |
| Aacr Ltd | Construction | 2019 |
| AAD Trans Ltd | Transport & logistics | 2016 |
| Aadam Motors Ltd | Wholesale & retail | 2025 |
| Aadam Umar Limited | Financial services | 2021 |
| Aadawa Construction UK Private Limited | Information & communication | 2023 |
| Aadya Health Care Ltd | Health & social care | 2019 |
| Aafiya Ltd | Health & social care | 2022 |
| Aafiya Medical Aesthetics Ltd | Health & social care | 2021 |
| Aafiya Scents Ltd | Manufacturing | 2020 |
| Aafiyah Limited | Wholesale & retail | 2020 |
| AAH Healthcare Ltd | Health & social care | 2023 |
| Aahil Innovations Limited | Health & social care | 2015 |
| Aahm Capital Ltd | Professional & scientific | 2023 |
| AAI Tech Limited | Wholesale & retail | 2017 |