| A1 Roofing & Building (Yorkshire) Limited | Construction | 2022 |
| A1 Tyre Grip Limited | Wholesale & retail | 2025 |
| A1LS Ltd | Wholesale & retail | 2025 |
| A2 Enterprise Ltd | Wholesale & retail | 2025 |
| A20 Lounge Ltd | Hospitality | 2024 |
| A2B Travel Bradford Limited | Transport & logistics | 2023 |
| A2R Bathrooms Ltd | Construction | 2025 |
| A2Z Construction (Yorkshire) Ltd | Construction | 2019 |
| A2Z Discounts Limited | Wholesale & retail | 2014 |
| A2Z Foods Limited | Wholesale & retail | 2020 |
| A2Z Learning Centre Ltd | Health & social care | 2017 |
| A2Z Research and Education Ltd. | Education | 2019 |
| A2Z Technology Ltd | Wholesale & retail | 2018 |
| A2Z Travel Services Ltd | Transport & logistics | 2021 |
| A2Z Wholesalers Limited | Wholesale & retail | 2024 |
| A2ZCC Ltd | Health & social care | 2026 |
| A2ZHUB Ltd | Wholesale & retail | 2023 |
| A3D Consulting Limited | Professional & scientific | 2021 |
| A4 Builders & Constructions Ltd | Construction | 2025 |
| A4E Systems Ltd | Manufacturing | 2012 |
| A7FASHION Ltd | Wholesale & retail | 2025 |
| AA & Co Enterprise Limited | Hospitality | 2017 |
| AA & MA Khan Ltd | Professional & scientific | 2022 |
| AA & RA Ltd. | Financial services | 2026 |
| AA Bradford Properties Holdings Limited | Construction | 2021 |
| AA Bradford Properties Limited | Construction | 2021 |
| AA Creative EMB Ltd | Wholesale & retail | 2023 |
| AA Design Group Ltd | Professional & scientific | 2024 |
| AA Design Ltd | Wholesale & retail | 2019 |
| AA Elegant Movers Ltd | Transport & logistics | 2023 |
| AA Enterprise BFD Ltd | Real estate | 2023 |
| AA Innovation Hub Ltd | Construction | 2026 |
| AA Legal Services Ltd | Other services | 2026 |
| AA Merchants Ltd | Wholesale & retail | 2022 |
| AA Movements Ltd | Transport & logistics | 2014 |
| AA Pharm Limited | Wholesale & retail | 2010 |
| AA Pharmplus Ltd | Wholesale & retail | 2022 |
| AA Physio Limited | Health & social care | 2024 |
| AA Planning Limited | Professional & scientific | 2026 |
| AA Prep UK Ltd | Transport & logistics | 2025 |
| AA Prime Ltd | Wholesale & retail | 2026 |
| AA Private Hire Rentals Limited | Administrative & support | 2024 |
| AA Properties (Bradford) Ltd | Real estate | 2013 |
| AA Quality Cars Ltd | Wholesale & retail | 2025 |
| AA Quick Services Ltd | Transport & logistics | 2025 |
| AA Response Couriers Ltd | Transport & logistics | 2025 |
| AA Rosestone Limited | Construction | 2024 |
| AA Shopfronts Ltd | Manufacturing | 2018 |
| AA Taxi Rental Group Limited | Administrative & support | 2026 |
| AA4VANS Limited | Administrative & support | 2010 |
| AAA Building Maintenance Limited | Administrative & support | 2019 |
| AAA Couriers Logistics Ltd | Transport & logistics | 2025 |
| AAA Flooring Limited | Construction | 2023 |
| AAA High Pressure Cleaning Limited | Administrative & support | 2016 |
| AAA Maintenance Limited | Administrative & support | 2015 |
| AAA Ventures Ltd | Financial services | 2014 |
| AAA25 Ltd | Public administration | 2025 |
| Aaadetailing Ltd | Administrative & support | 2025 |
| Aaah Ventures Ltd | Administrative & support | 2023 |
| Aaaz Properties Ltd | Real estate | 2024 |
| Aaazzure Ltd | Administrative & support | 2021 |
| AAB Traders Ltd | Administrative & support | 2019 |
| Aabacus Accountants & Tax Consultants Ltd. | Professional & scientific | 2011 |
| Aabacus Accountants Ltd | Professional & scientific | 2019 |
| Aabpara Limited | Wholesale & retail | 2025 |
| AAE Consultants Limited | Professional & scientific | 2017 |
| AAG Enterprises Ltd | Real estate | 2024 |
| AAG Heating Services Limited | Construction | 2024 |
| Aagrah Events Limited | Hospitality | 2025 |
| Aagrah Garforth Limited | Hospitality | 2022 |
| Aagrah Midpoint Catering Ltd | Hospitality | 2023 |
| Aagrah Midpoint Group Limited | Hospitality | 2022 |
| Aagrah Midpoint Limited | Hospitality | 2022 |
| Aagrah Saltaire Limited | Hospitality | 2023 |
| Aagrah Shipley Limited | Hospitality | 2022 |
| Aagrah TM Limited | Hospitality | 2023 |
| AAH Property Bradford Ltd | Real estate | 2026 |
| AAH Real Estate Ltd | Real estate | 2023 |
| Aahil Highfield Group Limited | Real estate | 2025 |
| Aahil Services Ltd | Transport & logistics | 2024 |
| Aahm Ltd | Real estate | 2026 |
| AAI Eco Solutions Ltd | Construction | 2025 |
| Aaina Reflections Ltd | Wholesale & retail | 2020 |
| Aaka Property Ltd | Households | 2025 |
| AAM IT Ltd | Information & communication | 2025 |
| AAM Residential Properties Limited | Real estate | 2025 |
| Aaman Pharma Ltd | Health & social care | 2024 |
| Aamanah Care Group Ltd | Health & social care | 2025 |
| Aamanah Care Services Ltd | Health & social care | 2026 |
| Aamar Logistics Limited | Transport & logistics | 2020 |
| Aamat Ltd | Health & social care | 2020 |
| Aamayahs Ltd | Wholesale & retail | 2023 |
| Aamina ALI Ltd | Health & social care | 2024 |
| Aamina Ltd | Health & social care | 2024 |
| Aana Holdings Ltd | Real estate | 2026 |
| Aana Medical Ltd | Administrative & support | 2022 |
| Aannn Ltd | Transport & logistics | 2024 |
| Aapas Modestwear Limited | Wholesale & retail | 2025 |
| Aaphone Ltd | Wholesale & retail | 2024 |
| Aaqib's Optical Ltd | Health & social care | 2023 |