| 01 E-Commerce Ltd | Information & communication | 2024 |
| 14TWELVE Ltd | Construction | 2020 |
| 14TWELVE Realty Ltd | Real estate | 2025 |
| 1852 Limited | Hospitality | 2019 |
| 24/7 Maintenance Solutions Ltd | Construction | 2025 |
| 2BX Limited | Arts & recreation | 2010 |
| 33 Fulfil Ltd | Transport & logistics | 2023 |
| 33 Fulfilment Ltd | Transport & logistics | 2026 |
| 3A Global Ltd | Real estate | 2025 |
| 46 Thermal Contracts Ltd | Construction | 2025 |
| 4D Hype Ltd | Information & communication | 2023 |
| 4XMASTERSCLUB Ltd | Education | 2025 |
| 81 Consultancy Ltd | Professional & scientific | 2024 |
| A & K Decor Ltd | Construction | 2016 |
| A & K Delivery Ltd | Transport & logistics | 2017 |
| A & P Consultancy Ltd | Professional & scientific | 2018 |
| A & S Associates (Accounting Services) Ltd | Professional & scientific | 2022 |
| A & S Associates Consultancy Ltd | Administrative & support | 2025 |
| A & S FIX IT Wright Ltd | Construction | 2022 |
| A a & K Lettings Limited | Real estate | 2019 |
| A Khan Meat and Poultry Ltd | Wholesale & retail | 2020 |
| A V Products Limited | Manufacturing | 2013 |
| A Woodcock and Sons Limited | Manufacturing | 2003 |
| A Z Brands Ltd | Hospitality | 2022 |
| A&D Properties (Leicester) Limited | Real estate | 2025 |
| A&G UK Express Ltd | Transport & logistics | 2026 |
| A&N Pharma Ltd | Wholesale & retail | 2022 |
| A-1 Petroleum Group Limited | Wholesale & retail | 2010 |
| A.C.R.C. Limited | Energy | 1991 |
| A.J. Lunn & Co. Limited | Construction | 2011 |
| A.O.A Medic Limited | Real estate | 2021 |
| A/B Transport Courier Limited | Transport & logistics | 2019 |
| A2B Plumbing, Heating & GAS Repairs Ltd | Energy | 2012 |
| AA Sameday Express Limited | Transport & logistics | 2003 |
| AAA Health and Safety Ltd | Professional & scientific | 2020 |
| Aardvark Stratton Group Ltd | Manufacturing | 2020 |
| Aardvark Stratton Holdings Ltd | Financial services | 2021 |
| AB8 Designs Ltd | Manufacturing | 2024 |
| Abacass Construction Ltd | Construction | 2024 |
| Abbey Cars and Taxis Hires Ltd | Transport & logistics | 2020 |
| Abbey Grounds Maintenance Ltd | Administrative & support | 2025 |
| Able Removals and Storage Limited | Transport & logistics | 2014 |
| Abubakr Ecom Ltd | Administrative & support | 2025 |
| Accumulo Ltd | Information & communication | 2009 |
| Ace Midlands Construction Ltd | Construction | 2025 |
| Action Homeless (Leicester) Limited | Hospitality | 1989 |
| ADA Page Ltd | Professional & scientific | 2017 |
| Adam Suffolk Flat Roofing Ltd | Construction | 2017 |
| Adcostore Ltd | Wholesale & retail | 2025 |
| Adlisters Ltd | Professional & scientific | 2025 |
| Advanced Wall Protection Ltd | Construction | 2024 |
| AE Express LLP | | 2014 |
| Aerofab Stainless Limited | Manufacturing | 1992 |
| AES (Coatings) Ltd | Construction | 2019 |
| Affordable Appliances Ltd | Wholesale & retail | 2022 |
| Africa Women Summit UK Ltd | Other services | 2025 |
| AG Global Ventures Ltd | Real estate | 2026 |
| AG Mech Solutions Ltd | Professional & scientific | 2016 |
| AGP Designs Limited | Wholesale & retail | 2016 |
| Ahct Holdings Ltd | Financial services | 2024 |
| Ahhsaeed Ltd | Wholesale & retail | 2025 |
| AHM Management Ltd | Professional & scientific | 2025 |
| Ahtc Services Ltd | Manufacturing | 2025 |
| Aimm & Co. Ltd | Manufacturing | 2007 |
| Aimm Developments Limited | Manufacturing | 2022 |
| Air Ability Limited | Construction | 2007 |
| Ajiichiban Company (UK) Ltd | Wholesale & retail | 2025 |
| Ajit Haulage Limited | Transport & logistics | 2020 |
| Ajiv Properties Limited | Real estate | 2024 |
| Ajpl Properties Ltd | Real estate | 2025 |
| AJT Cooling Ltd | Energy | 2020 |
| Akbar Indian Cuisine and Takeaway Ltd | Hospitality | 2025 |
| Akkuserviceuk Ltd. | Manufacturing | 2014 |
| Alangh Investments Limited | Real estate | 2024 |
| Aleen Properties Ltd | Financial services | 2022 |
| Alex Construction & Maintenance Limited | Construction | 2018 |
| Alex Electrical Leicester Ltd | Construction | 2022 |
| Allstar Paintworks Ltd | Wholesale & retail | 2014 |
| ALN Accountants Ltd | Professional & scientific | 2025 |
| Alpha Construction (Wigston) Ltd | Construction | 2024 |
| Alpha Star Limited | Wholesale & retail | 2019 |
| Alphablue Properties Limited | Real estate | 2026 |
| Amaan Investments Ltd | Real estate | 2025 |
| Amal Motors Ltd | Wholesale & retail | 2024 |
| Ambivarun Holdings Ltd | Real estate | 2023 |
| AMCS1 Ltd | Wholesale & retail | 2023 |
| AMELIA1503 Ltd | Wholesale & retail | 2023 |
| AMG Investments Ltd | Real estate | 2016 |
| Amison Facade Installations Limited | Financial services | 2019 |
| Anchor Enterprises Limited | Health & social care | 2023 |
| Anglosax Lifts Ltd | Manufacturing | 2009 |
| Antalya Restaurant Limited | Hospitality | 2025 |
| Antalya Wigston Limited | Hospitality | 2025 |
| Antony Rhythm Studios Ltd | Arts & recreation | 2024 |
| Apex Rise Ltd | Wholesale & retail | 2026 |
| APT Design Limited | Professional & scientific | 2001 |
| Arcadia Records Ltd | Administrative & support | 2025 |
| Ardon Ltd | Construction | 2025 |
| Areichelt Consulting Ltd | Health & social care | 2025 |
| Arel-Bm Ltd | Construction | 2021 |