| Absk Ltd | Professional & scientific | 2026 |
| Absolute Broadcast Limited | Information & communication | 2012 |
| Absolute Finesse Limited | Construction | 2016 |
| Absolute Window Solutions Limited | Construction | 2009 |
| Abstrakt Services Limited | Manufacturing | 1988 |
| Abtac Limited | Professional & scientific | 2013 |
| ABU Al-Yusr Trading Company Ltd | Wholesale & retail | 2025 |
| ABU Hafsah Limited | Education | 2007 |
| ABU Hurayrah Ltd | Education | 2022 |
| ABU Ibrahim Ltd | Transport & logistics | 2021 |
| ABU Joundoub Ltd | Wholesale & retail | 2022 |
| Abu-Umair & Sons Limited | Wholesale & retail | 2011 |
| Abubaker Commercial Enterprises Ltd | Real estate | 2020 |
| Abul Noor Publications Ltd | Information & communication | 2019 |
| Abula Group of Companies Ltd | Wholesale & retail | 2025 |
| Abundant Life Care Ltd | Health & social care | 2015 |
| Abvolve Ltd | Wholesale & retail | 2022 |
| ABX Developments Service Limited | Construction | 2023 |
| ABZ Foods Ltd | Hospitality | 2024 |
| ABZ Properties Leicester Limited | Real estate | 2017 |
| Abzs Print & Signs Ltd | Manufacturing | 2015 |
| AC & K Ltd | Construction | 2025 |
| AC Adaptors R US Ltd | Wholesale & retail | 2011 |
| AC Agriplant Ltd | Administrative & support | 2023 |
| AC General Ltd | Wholesale & retail | 2023 |
| AC James Limited | Administrative & support | 2025 |
| AC Mccarthy Properties Ltd | Real estate | 2021 |
| AC Motor Services (Leicester) Ltd | Wholesale & retail | 2007 |
| AC Properties (Leics) Ltd | Real estate | 2024 |
| AC Pubs Limited | Hospitality | 2026 |
| AC Shopfitting Ltd | Wholesale & retail | 2020 |
| AC Taxi Leicester Ltd | Transport & logistics | 2023 |
| AC Woodgreen Ltd | Hospitality | 2019 |
| Ac&D Properties Ltd | Real estate | 2023 |
| Acacia Consulting Limited | Information & communication | 2012 |
| Acacia Graphix Limited | Manufacturing | 2016 |
| Acacia Investments Leicester Ltd | Real estate | 2022 |
| Acacia Luxury Properties Limited | Real estate | 2021 |
| Acacia Restaurant Ltd | Hospitality | 2024 |
| Academic Pro Pathways Ltd | Education | 2024 |
| Academixedge Limited | Professional & scientific | 2024 |
| Academy Excellence Ltd | Education | 2015 |
| Academy Homes Limited | Health & social care | 2024 |
| Academy of Life Ltd | Education | 2024 |
| ACB PR Limited | Professional & scientific | 2022 |
| ACB247 Ltd | Real estate | 2021 |
| ACC Group Holdings Limited | Professional & scientific | 2019 |
| Accapita LLP | | 2013 |
| Accelerating Experts Ltd | Professional & scientific | 2025 |
| Accentra Limited | Wholesale & retail | 2013 |
| Accept Recruitment Ltd | Administrative & support | 2015 |
| Access Alternative Provision Limited | Education | 2025 |
| Access Catering Limited | Hospitality | 2004 |
| Access Creative Hub Ltd | Arts & recreation | 2025 |
| Access Procurement Limited | Administrative & support | 2015 |
| Access Rating Limited | Professional & scientific | 2025 |
| Access Safety Premium Solutions Limited | Construction | 2024 |
| Access to Property Ltd | Financial services | 2016 |
| Accessible Transports Limited | Transport & logistics | 2025 |
| Accessory Addict Ltd | Wholesale & retail | 2007 |
| Accident Claims Care Limited | Health & social care | 2019 |
| Accident Repair Centre Leicester Ltd | Wholesale & retail | 2022 |
| Acclaim Driving Academy (Northern Ireland) Ltd. | Education | 1994 |
| Acclaim Driving Academy Limited | Education | 1990 |
| Acclaim Driving Limited | Education | 2010 |
| Acclivity Solutions Ltd | Administrative & support | 2018 |
| Accomplished Financial Solutions Ltd | Financial services | 2023 |
| Accountability Leicester Ltd | Professional & scientific | 2011 |
| Accountax Direct (Leicester) Limited | Professional & scientific | 2003 |
| Accountsbot Ltd | Information & communication | 2026 |
| Accountscape Ltd | Professional & scientific | 2020 |
| Accplus Limited | Professional & scientific | 2003 |
| Accretio Solutions Limited | Professional & scientific | 2019 |
| Acctax Accountants Limited | Professional & scientific | 2015 |
| Acctax Ltd | Professional & scientific | 2012 |
| Acctax Umbrella Company Limited | Administrative & support | 2020 |
| Accuheat Limited | Manufacturing | 2010 |
| Acculink Limited | Wholesale & retail | 1985 |
| Accupaytax IT Ltd | Information & communication | 2025 |
| Accurate Accountancy Group Ltd | Professional & scientific | 2019 |
| Accurate Print & Packaging Limited | Manufacturing | 1994 |
| Accuratus Forensic Ltd | Professional & scientific | 2023 |
| Accutick Limited | Professional & scientific | 2024 |
| ACD Residentials Ltd | Real estate | 2017 |
| Ace & Sons Limited | Financial services | 2021 |
| Ace Abodes Ltd | Real estate | 2024 |
| Ace ADS Ltd | Professional & scientific | 2026 |
| Ace Appointments (Midlands) Limited | Administrative & support | 1978 |
| Ace ARC Holdings Limited | Financial services | 1986 |
| Ace Auto Spares Ltd | Wholesale & retail | 2018 |
| Ace Caps Energy Solutions Ltd | Professional & scientific | 2020 |
| Ace Clothing (Leic) Ltd. | Wholesale & retail | 2017 |
| Ace Clothing (Leicester) Ltd | Manufacturing | 2024 |
| Ace Construction Enterprises (Leicester) Limited | Manufacturing | 2004 |
| Ace Creative Labs Ltd | Manufacturing | 2024 |
| Ace DC Ltd | Health & social care | 2019 |
| Ace Driving Ltd | Education | 2024 |
| Ace Drylining Contractors Ltd | Construction | 2015 |
| Ace Educate Ltd | Education | 2025 |
| Ace Fashionwear Ltd | Manufacturing | 2020 |