| Abdsoft Ltd | Information & communication | 2019 |
| Abdulsourcedit Ltd | Wholesale & retail | 2025 |
| Abec Legal Ltd | Professional & scientific | 2021 |
| Abeer Al-Furqan Ltd | Education | 2026 |
| Abercom Trading UK Limited | Health & social care | 2015 |
| Abeto Limited | Professional & scientific | 2007 |
| Abfs 2020 Limited | Hospitality | 2020 |
| ABI Supermarket Limited | Wholesale & retail | 2018 |
| Abideth Food Ltd | Professional & scientific | 2022 |
| Abielmo Limited | Manufacturing | 2011 |
| Abigail Steel Training Ltd | Education | 2021 |
| Abike's Kitchen Limited | Hospitality | 2023 |
| Ability Consulting Ltd | Information & communication | 2025 |
| Ability Handling Limited | Manufacturing | 1992 |
| Abingdon Building Services Limited | Construction | 2017 |
| Abisi Limited | Health & social care | 2016 |
| ABK Infotech Ltd | Wholesale & retail | 2021 |
| Abki Logistics Ltd | Other services | 2025 |
| Able Property Services Group Ltd | Construction | 2017 |
| Able Roofing Services Nottingham Limited | Construction | 2020 |
| Ablett Bell Limited | Information & communication | 2012 |
| ABM Health and Wellness Limited | Wholesale & retail | 2025 |
| ABM Intelligence Limited | Information & communication | 1997 |
| Abm-Derma Limited | Health & social care | 2024 |
| Abode 25 Limited | Construction | 2024 |
| Abode Vision Ltd | Construction | 2012 |
| Abonech Ventures Ltd | Health & social care | 2024 |
| ABOUT2MOVE Ltd | Real estate | 2010 |
| Abouzid Radiology Ltd | Health & social care | 2024 |
| Above Services Ltd | Construction | 2018 |
| Above the Line SET Assistance & Security Ltd | Administrative & support | 2009 |
| Above the Rest Cleaning Limited | Administrative & support | 2024 |
| Above the Rest Commercial Cleaners Ltd | Administrative & support | 2013 |
| Above-One Ltd | Health & social care | 2018 |
| Above-One Property Ltd | Real estate | 2026 |
| ABP Retail Limited | Wholesale & retail | 2006 |
| Abpm Recruitment Limited | Administrative & support | 2008 |
| Abps Health Limited | Health & social care | 2026 |
| Abra Engineering Limited | Manufacturing | 2011 |
| Abrabo Limited | Manufacturing | 2025 |
| Abramovamilano Ltd | Wholesale & retail | 2019 |
| Abrams GRP LLP | | 2021 |
| Abreks Ltd | Wholesale & retail | 2025 |
| Abronoma Home Care Ltd | Health & social care | 2023 |
| ABS Auto Centre Limited | Administrative & support | 2016 |
| ABS Bomgosto Ltd | Hospitality | 2025 |
| ABS Executive Group Ltd | Wholesale & retail | 2024 |
| ABS Mots & Auto Repairs Ltd | Wholesale & retail | 2024 |
| ABS Mots Limited | Wholesale & retail | 2022 |
| Absn Inspection & Testing Limited | Construction | 2007 |
| Absolute Builders Ltd | Construction | 2009 |
| Absolute Carbon Ltd | Manufacturing | 2019 |
| Absolute Care and Traning Limited | Health & social care | 2019 |
| Absolute Cleaning Ltd | Administrative & support | 2025 |
| Absolute Content Limited | Financial services | 2015 |
| Absolute Development Engineering (UK) Ltd | Manufacturing | 2014 |
| Absolute Fans Limited | Arts & recreation | 2021 |
| Absolute Home Care Nottingham Limited | Health & social care | 2015 |
| Absolute Industrial Coatings Ltd | Construction | 2021 |
| Absolute Legal Consultants Limited | Professional & scientific | 2017 |
| Absolute One Holdings Limited | Financial services | 2022 |
| Absolute One Realty Limited | Real estate | 2022 |
| Absolute Property & Lettings Ltd | Real estate | 2025 |
| Absolute Risk Technology Limited | Professional & scientific | 2009 |
| Absolute SKI Limited | Hospitality | 1997 |
| Abstract Events Ltd | Administrative & support | 2016 |
| Abstract Services Limited | Financial services | 2021 |
| Abstrakt Creative Ltd. | Professional & scientific | 2006 |
| Absurdity Group Ltd | Professional & scientific | 2026 |
| Abswo Group Ltd | Hospitality | 2023 |
| ABT Andy Limited | Information & communication | 2016 |
| ABU Eesa Medical Ltd | Real estate | 2023 |
| Abuali Services Ltd | Transport & logistics | 2021 |
| Abudraz Services Ltd | Health & social care | 2024 |
| Abula Notts Ltd | Hospitality | 2024 |
| ABZ Business Consultant Ltd | Professional & scientific | 2025 |
| AC & JW Services Limited | Other services | 2025 |
| AC Advisory Ltd | Professional & scientific | 2026 |
| AC Dermatology Limited | Health & social care | 2026 |
| AC ENT Services Limited | Health & social care | 2016 |
| AC Estate Management Ltd | Real estate | 2022 |
| AC Events Ltd | Hospitality | 2019 |
| AC INS Consultants Ltd | Financial services | 2014 |
| AC King Ltd | Construction | 2023 |
| AC Medical Services Ltd | Health & social care | 2015 |
| AC Pahn Property Ltd | Real estate | 2022 |
| AC Plumbing and Building Maintenance Ltd | Construction | 2022 |
| AC Probuild Limited | Construction | 2020 |
| AC Projects and Consulting Ltd | Information & communication | 2025 |
| AC Property Care Limited | Real estate | 2026 |
| AC Property Midlands Ltd | Real estate | 2025 |
| AC Rentals Ltd | Real estate | 2021 |
| AC Wollaton | Arts & recreation | 2018 |
| Ac&Ts Cleaning Solutions Ltd | Hospitality | 2023 |
| AC13 Ltd | Wholesale & retail | 2024 |
| AC13 Nottingham Ltd | Wholesale & retail | 2023 |
| AC13 Premier Ltd | Wholesale & retail | 2009 |
| AC13 VIP Limited | Wholesale & retail | 2023 |
| AC4 Consulting Limited | Professional & scientific | 2025 |
| ACA Engineering Consultants Ltd | Professional & scientific | 2025 |