| ADR Direct Ltd | Transport & logistics | 2025 |
| ADR Groundworks and Excavations Limited | Construction | 2021 |
| ADR Traction Ltd | Transport & logistics | 2019 |
| ADT Eyecare Ltd | Administrative & support | 2022 |
| Aduro Ltd | Health & social care | 2015 |
| Advanced Fire Protection (Rochdale) Ltd | Public administration | 2016 |
| Advantage Property Group Ltd | Real estate | 2022 |
| Adventure Arts CIC | Other services | 2026 |
| AE & S Consultancy Limited | Professional & scientific | 2016 |
| AEA IT Consulting Ltd | Information & communication | 2026 |
| AED Ltd | Professional & scientific | 2013 |
| AEI Installations Ltd | Construction | 2016 |
| Aeonian Emerging Markets Ltd | Professional & scientific | 2018 |
| Aerodyne Consulting Ltd | Professional & scientific | 2024 |
| Aerosol Solutions Limited | Wholesale & retail | 1998 |
| Aesthetics by Aqsa Limited | Other services | 2024 |
| Aestheticsbyselina Ltd | Other services | 2022 |
| AET Commercials Ltd | Wholesale & retail | 2025 |
| AF Food Services Ltd | Hospitality | 2026 |
| AF Lettings Ltd | Real estate | 2026 |
| AF Trade Experts Ltd | Wholesale & retail | 2022 |
| AFA Global Trading Ltd | Wholesale & retail | 2025 |
| AFB Kits Ltd | Wholesale & retail | 2018 |
| AFF Properties Ltd | Real estate | 2025 |
| Affair Clothing Ltd | Wholesale & retail | 2012 |
| Affinity Dental Limited | Health & social care | 2008 |
| Affinity Lifts Ltd | Manufacturing | 2025 |
| Affinity Seven Law Solicitors Ltd | Professional & scientific | 2015 |
| Affluent Sites Ltd | Information & communication | 2020 |
| Affordable Wine Online Limited | Wholesale & retail | 2021 |
| AFN Home Limited | Wholesale & retail | 2018 |
| Afranua Wellness CIC | Health & social care | 2025 |
| Afro Product Online Ltd | Wholesale & retail | 2019 |
| AG Plastering & Building Services Ltd | Construction | 2025 |
| AG Unique Limited | Health & social care | 2023 |
| AGC Manchester Limited | Real estate | 2025 |
| Agentsupply Limited | Real estate | 1994 |
| Agha Logistics Ltd | Wholesale & retail | 2025 |
| AGS Cleanpoint (Oldham) Limited | Administrative & support | 2006 |
| AGW Plasterers Limited | Construction | 2021 |
| AH Crown Holdings Limited | Real estate | 2025 |
| AH Enterprises Limited | Wholesale & retail | 2026 |
| AH Imports Ltd | Wholesale & retail | 2025 |
| AH Khan Limited | Health & social care | 2012 |
| AH Shopping Hub Ltd | Wholesale & retail | 2025 |
| AHA Property Developments Ltd | Administrative & support | 2014 |
| Ahat Trading Limited | Wholesale & retail | 2021 |
| Ahavah-Adore Limited | Other services | 2025 |
| Ahawk Ltd | Real estate | 2018 |
| AHE Property Ltd | Real estate | 2018 |
| AHE Wholesale Ltd | Administrative & support | 2022 |
| Ahil Venture Ltd | Wholesale & retail | 2026 |
| Ahmad Investments 2022 Limited | Financial services | 2022 |
| Ahmad&Co Limited | Wholesale & retail | 2025 |
| Ahmed & Family Holdings Ltd | Professional & scientific | 2026 |
| Ahmed Habib Ltd | Wholesale & retail | 2026 |
| Ahmed Shah Ltd | Wholesale & retail | 2026 |
| Ahmm Home Ltd | Manufacturing | 2025 |
| Ahsan Properties Ltd | Real estate | 2025 |
| AI Health Club Limited | Other services | 2023 |
| AI Power Properties Limited | Real estate | 2024 |
| AI Rochdale Limited | Hospitality | 2026 |
| AIM High Auto Car Traders Limited | Wholesale & retail | 2025 |
| Aimaa Limited | Wholesale & retail | 2025 |
| Aimicon Ltd | Wholesale & retail | 2025 |
| Ainsworth Properties Ltd | Real estate | 2021 |
| Air Athletics Cheer and Dance CIC | Education | 2022 |
| Airsafe UK Limited | Construction | 2003 |
| Airsafe UK Management Holdings Ltd. | Administrative & support | 2011 |
| Airtronics Transmission Services Ltd | Wholesale & retail | 2025 |
| AIZ Consultancy Services Limited | Information & communication | 2017 |
| AJ Glam Studio Ltd | Other services | 2025 |
| AJ Properties (North West) Limited | Real estate | 2004 |
| Aj&S Holdings Ltd | Financial services | 2023 |
| Aj's OFF Licence Limited | Wholesale & retail | 2020 |
| Ajanta Foods Limited | Hospitality | 2022 |
| Ajeselite Ltd | Wholesale & retail | 2025 |
| AJK Motorz Limited | Wholesale & retail | 2022 |
| AJL Legal Consultants Ltd | Professional & scientific | 2015 |
| AJM 999 Projects LLP | | 2011 |
| AJR Beauty and Aesthetics Ltd | Other services | 2020 |
| AJZ Property Group Ltd | Construction | 2024 |
| AK and IK Homes Limited | Real estate | 2026 |
| AK Fuel Limited | Wholesale & retail | 2006 |
| AK Home Furnishings Ltd | Wholesale & retail | 2020 |
| AK Mini Store Ltd | Wholesale & retail | 2026 |
| Akamas Properties Limited | Real estate | 2015 |
| Akaq Services Limited | Professional & scientific | 2025 |
| Akari Health Ltd | Information & communication | 2025 |
| Akay Developments Limited | Professional & scientific | 2023 |
| Akay Holdings Limited | Financial services | 2026 |
| Akay Projects Limited | Real estate | 2026 |
| Akdtraders Ltd | Information & communication | 2026 |
| AKG Medical Services Limited | Health & social care | 2011 |
| Akhun Bros Limited | Transport & logistics | 2024 |
| Akhunzada Traders Limited | Wholesale & retail | 2026 |
| Akma Healthcare Ltd | Wholesale & retail | 2023 |
| Akram & Sons Limited | Wholesale & retail | 2026 |
| Akram Optical Ltd | Health & social care | 2022 |
| Akrin Creations Ltd | Wholesale & retail | 2024 |