| Atlas Financial Planning Limited | Newry | 2005 |
| Atlas Fitness Conditioning Limited | East Grinstead | 2019 |
| Atlas Flats Ltd | London | 2026 |
| Atlas Forklift Holdings Limited | West Bromwich | 2019 |
| Atlas FRM (UK) Limited | London | 2025 |
| Atlas Funding 2022-1 PLC | London | 2022 |
| Atlas Funding 2023-1 PLC | London | 2023 |
| Atlas Funding 2024-1 PLC | London | 2024 |
| Atlas Funding 2025-1 PLC | London | 2025 |
| Atlas Funding 2025-2 PLC | London | 2025 |
| Atlas Funding 2026-1 PLC | London | 2026 |
| Atlas Global Advisors Limited | London | 2019 |
| Atlas Global Finance Ltd | London | 2026 |
| Atlas Global Holdings Ltd | London | 2018 |
| Atlas Green Holdings Ltd | Batley | 2013 |
| Atlas Group Operations Ltd | Birmingham | 2026 |
| Atlas Groupe SAS Ltd | London | 2026 |
| Atlas Health Group Limited | Sidcup | 2021 |
| Atlas Helix Co. Ltd | Tonbridge | 2025 |
| Atlas Hill Ltd | Cardiff | 2012 |
| Atlas Holdco Limited | London | 2020 |
| Atlas Holdings & Investments Ltd | Retford | 2019 |
| Atlas Holdings 2022-1 Limited | London | 2022 |
| Atlas Holdings 2023-1 Limited | London | 2023 |
| Atlas Holdings 2024-1 Limited | London | 2024 |
| Atlas Holdings 2025-1 Limited | London | 2025 |
| Atlas Holdings 2025-2 Limited | London | 2025 |
| Atlas Holdings 2026-1 Limited | London | 2026 |
| Atlas Holdings Group Limited | London | 2023 |
| Atlas Holdings Soho Limited | London | 2024 |
| Atlas Impact Partners Services UK Ltd | London | 2018 |
| Atlas Incorporation Ltd | Manchester | 2026 |
| Atlas Independent Financial Services Limited | Cardiff | 2013 |
| Atlas Industrial Holdings Limited | London | 2026 |
| Atlas Infrastructure Partners (UK) Ltd | Reading | 2017 |
| Atlas Invested Limited | London | 2025 |
| Atlas IT Holdings Limited | London | 2024 |
| Atlas Landers Ltd | Leeds | 2019 |
| Atlas Life Limited | Northampton | 2025 |
| Atlas Logistics UK Holdings Limited | Birmingham | 2024 |
| Atlas Midco 1 Limited | London | 2021 |
| Atlas Money Limited | London | 2025 |
| Atlas Mortgages Ltd | Warrington | 2006 |
| Atlas Padel Group Ltd | Chigwell | 2025 |
| Atlas Partners Investments Ltd | Canterbury | 2015 |
| Atlas PAY & Protection Limited | London | 2026 |
| Atlas Pensions Consultancy Services Limited | Reading | 2014 |
| Atlas Personal Wealth Management Ltd | Leigh-On-Sea | 2025 |
| Atlas Point Partners Ltd | London | 2025 |
| Atlas Prime Holdings Ltd | London | 2025 |
| Atlas Professionals International Limited | Bristol | 2024 |
| Atlas Project Midco Limited | London | 2021 |
| Atlas Property Finance Limited | Stanmore | 2020 |
| Atlas Quantitative Limited | London | 2025 |
| Atlas Real Estate Holdings Limited | London | 2022 |
| Atlas Resources Footprint AI Limited | Cardiff | 2024 |
| Atlas Ridge Limited | Oxford | 2025 |
| Atlas Risk Management Limited | Manchester | 2001 |
| Atlas Scale Limited | Sidmouth | 2024 |
| Atlas Securities Ltd | London | 2022 |
| Atlas Securitized Products 1 (UK Holdings) Limited | London | 2023 |
| Atlas Solutions Holding Ltd | London | 2026 |
| Atlas Sustainability Advisors Ltd | London | 2018 |
| Atlas TMA Limited | Cotesbach | 2026 |
| Atlas Topco 1 Limited | London | 2021 |
| Atlas Topco Limited | London | 2020 |
| Atlas Tower Group Holdings Limited | Glastonbury | 2019 |
| Atlas Tower Holdings Limited | Colchester | 2019 |
| Atlas Trade Finance Limited | Worthing | 1997 |
| Atlas Travel Group Limited | London | 2026 |
| Atlas Tube Bending 1 Ltd | Oldham | 2024 |
| Atlas UK Bidco I Limited | Fareham | 2026 |
| Atlas UK Bidco Limited | London | 2020 |
| Atlas UK Intermediate Limited | London | 2020 |
| Atlas UK Midco I Limited | Fareham | 2026 |
| Atlas UK Parent Limited | London | 2020 |
| Atlas UK Topco I Limited | Fareham | 2025 |
| Atlas Uk-Eur Limited | London | 2021 |
| Atlas Uk-Usd Limited | London | 2021 |
| Atlas Ventures Investment Advisers Limited | London | 2026 |
| Atlas Ventures Syndicate Limited | London | 2022 |
| Atlas Voyage Secure Limited | London | 2019 |
| Atlas Washroom Group Ltd | West Auckland | 2024 |
| Atlas Washroom Holdings Ltd | County Durham | 2018 |
| Atlas ZD1 Limited | London | 2025 |
| ATLAS2 Borrower Limited | London | 2020 |
| ATLAS2 Holding Limited | London | 2020 |
| ATLAS2 Investment Limited | London | 2020 |
| Atlasian Ltd | London | 2024 |
| Atlaspay Ltd | London | 2026 |
| Atld Holdings Ltd | London | 2025 |
| Atley Financial Services Ltd | Maidstone | 2025 |
| Atlian Limited | London | 2025 |
| Atlntc Reit Midco Limited | London | 2026 |
| Atlus Holdings Ltd | Leicester | 2024 |
| ATM Finance Limited | London | 2017 |
| ATM Group Holdings Limited | York | 2021 |
| ATM Group Services Limited | York | 2019 |
| ATM Payments and Processing Ltd | London | 2026 |
| ATM Services Limited | Crickhowell | 2003 |