| Arogant G Limited | Hospitality | 2025 |
| Aroma Affair Limited | Hospitality | 2022 |
| Aroma Arabian Ltd | Wholesale & retail | 2025 |
| Aroma Cafe & Restaurant Ltd | Wholesale & retail | 2025 |
| Aroma Cafe Lounge Limited | Hospitality | 2019 |
| Aroma Coffee (B'Ham) Ltd | Hospitality | 2026 |
| Aroma Coffee House (WM) Ltd | Hospitality | 2022 |
| Aroma Curryhouse Ltd | Hospitality | 2019 |
| Aroma Pizza & Kebab Ltd | Wholesale & retail | 2026 |
| Aroma Rocks Ltd | Manufacturing | 2019 |
| Aroma Specialists Limited | Wholesale & retail | 2022 |
| Aroma Sphere Limited | Manufacturing | 2026 |
| Aroma Spice Flyford Ltd | Hospitality | 2025 |
| Aroma Sweets Ltd | Wholesale & retail | 2025 |
| Aroma UM Solutions Ltd | Wholesale & retail | 2025 |
| Aromar Acquisitions Ltd | Professional & scientific | 2023 |
| Aromas of Arabia Ltd | Wholesale & retail | 2025 |
| Aromas of Dubai Ltd | Wholesale & retail | 2024 |
| Aromaseason Ltd | Real estate | 2023 |
| Aromatica Foods Limited | Manufacturing | 2026 |
| Aromatik Music Ltd | Information & communication | 2022 |
| Aromique Beauty Ltd | Wholesale & retail | 2025 |
| Aron Auto Sale Ltd | Wholesale & retail | 2025 |
| Arooba Limited | Health & social care | 2019 |
| Arooj Boutique Limited | Wholesale & retail | 2023 |
| Aroosah Limited | Wholesale & retail | 2023 |
| Arora Fast Food UK Ltd | Hospitality | 2022 |
| Arora's Properties Ltd | Real estate | 2024 |
| Arorabrothersfood Ltd | Wholesale & retail | 2026 |
| Arosa Drive Management Co. Limited | Real estate | 1995 |
| Arosa Properties Ltd | Professional & scientific | 2025 |
| Arose Mateu Ltd | Other services | 2022 |
| Arotech Group Ltd | Wholesale & retail | 2026 |
| Aroush Foods Limited | Hospitality | 2019 |
| Aroushi Textiles Ltd | Wholesale & retail | 2022 |
| Arpad Solutions Ltd | Construction | 2025 |
| Arpero Ltd | Administrative & support | 2015 |
| ARQ Civil Engineering Limited | Construction | 2017 |
| ARQ Property Investments Ltd | Real estate | 2022 |
| ARQ360 Limited | Professional & scientific | 2026 |
| Arquebus Finco Limited | Administrative & support | 2021 |
| Arquebus Holdings Limited | Administrative & support | 2021 |
| Arrahma Supermarket Ltd | Wholesale & retail | 2025 |
| Arre Property Ltd | Real estate | 2023 |
| Arrell Ltd | Wholesale & retail | 2020 |
| Arren Marketing Ltd | Professional & scientific | 2017 |
| Arris Projects Ltd | Construction | 2026 |
| Arron Payne Limited | Professional & scientific | 2025 |
| Arrona Group Limited | Wholesale & retail | 2024 |
| Arroum Group Holdings Ltd | Financial services | 2024 |
| Arrow (Interior Services) Ltd | Construction | 2008 |
| Arrow Cleaning Services Limited | Administrative & support | 2016 |
| Arrow Couriers Ltd | Transport & logistics | 2020 |
| Arrow Express Developments Ltd | Construction | 2020 |
| Arrow Fitness Education Limited | Education | 2022 |
| Arrow Healthcare Limited | Health & social care | 2015 |
| Arrow Healthcare Recruitment Limited | Administrative & support | 2016 |
| Arrow Homes (Yorkshire) Ltd | Financial services | 2020 |
| Arrow IT Solutions Limited | Information & communication | 2009 |
| Arrow Logistics Ltd | Transport & logistics | 2025 |
| Arrow Plus 1 Ltd | Construction | 2022 |
| Arrow Provisions CIC | Education | 2026 |
| Arrowb 123 Management Company Limited | Households | 2026 |
| Arrowhead & Sons Ltd | Professional & scientific | 2017 |
| Arrowtop Properties LLP | | 2026 |
| Arrq Holdings Ltd | Real estate | 2020 |
| ARS Catering Limited | Hospitality | 2024 |
| Arsal Digital Services Ltd | Wholesale & retail | 2026 |
| Arscott Property Holdings Limited | Real estate | 2024 |
| Arsema Limited | Health & social care | 2014 |
| Arsen Group Ltd | Wholesale & retail | 2021 |
| Arsh & Co UK Ltd | Real estate | 2025 |
| Arsh Cookware Ltd | Wholesale & retail | 2025 |
| Arsha Barber Ltd | Wholesale & retail | 2023 |
| Arshad Khan Ltd | Health & social care | 2009 |
| Arshe Courier Limited | Education | 2022 |
| Arshia Aesthetics Clinic Ltd | Other services | 2022 |
| Arshian.Online.Retail Ltd | Wholesale & retail | 2026 |
| Arshm Ltd | Wholesale & retail | 2025 |
| Arslan Commerce Ltd | Wholesale & retail | 2025 |
| Arslan MAZ Trading Limited | Wholesale & retail | 2024 |
| Arslan Shahid Ltd | Administrative & support | 2022 |
| Arslan(Uk) Logistics Ltd | Transport & logistics | 2018 |
| Arsr Medical Limited | Health & social care | 2017 |
| Art & Wellbeing Studio Ltd | Health & social care | 2025 |
| Art & Wellness Ltd | Health & social care | 2026 |
| Art and Craft Music Publishing Limited | Manufacturing | 2014 |
| Art Attack Design Associates Limited | Manufacturing | 2003 |
| Art by Richard Limited | Arts & recreation | 2021 |
| Art Cleaning (Midlands) Limited | Administrative & support | 2005 |
| Art Courier Services UK Ltd | Transport & logistics | 2026 |
| Art Creater and Design Limited | Professional & scientific | 2025 |
| Art Department 29 Limited | Wholesale & retail | 2018 |
| Art Development Services Limited | Financial services | 2004 |
| Art Emporium Limited | Extraterritorial | 2009 |
| Art Expertise Limited | Wholesale & retail | 2021 |
| Art Fast Food Ltd | Hospitality | 2018 |
| Art HUG CIC | Arts & recreation | 2026 |
| Art HUT IR Limited | Hospitality | 2024 |
| Art MIR Ltd | Transport & logistics | 2019 |