| Aurora Property Finance Limited | Liverpool | 2009 |
| Aurora River Ltd | Bangor | 2025 |
| Aurora Strategy Investment Limited | Bracknell | 2022 |
| Aurora Technology Limited | London | 2025 |
| Aurora Trade Finans Limited | London | 2025 |
| Aurora UK Acquisitionco PTE Limited | London | 2023 |
| Aurora UK Alpha PLC | London | 1997 |
| Aurora UK Holdco Private Limited | London | 2023 |
| Aurora UK Topco Limited | London | 2023 |
| Aurora Underwriting (1997) Limited | London | 1997 |
| Aurora Utilities Holdco Limited | London | 2024 |
| Aurora Ventures Global Ltd | London | 2025 |
| Aurora Violetta Consulting Services Ltd | London | 2025 |
| Aurora Wealth Ltd. | London | 2026 |
| Aurora Wealth Management Limited | Leicester | 2012 |
| Aurorae Limited | London | 2016 |
| Auroran Holdings | London | 2025 |
| Aurore Ltd | London | 2026 |
| Aurorium Holdings UK Limited | Newcastle Upon Tyne | 2003 |
| Auros Europe Holdings Limited | London | 2025 |
| Aurous Bidco Limited | Swansea | 2023 |
| Aurous Midco Limited | Swansea | 2023 |
| Aurous Pizza Holdings Limited | Loughton | 2023 |
| Aurous Topco Limited | Swansea | 2023 |
| Aurstone Ltd | London | 2026 |
| Aursu Ltd | Leicester | 2024 |
| Aurum Asset Group Limited | Leeds | 2025 |
| Aurum Brokers Limited | Rayleigh | 2026 |
| Aurum Capital Partners Ltd | Slough | 2025 |
| Aurum Capital UK Ltd | London | 2021 |
| Aurum Commercial Finance Ltd | Bridgwater | 2024 |
| Aurum Commodity Finance Limited | London | 2025 |
| Aurum Equities Ltd | London | 2024 |
| Aurum Essex Ltd | Witham | 2025 |
| Aurum Financial Management Limited | Ashford | 2012 |
| Aurum Forum Ltd | Birmingham | 2026 |
| Aurum Funds Limited | London | 1995 |
| Aurum Global Partners Ltd | London | 2020 |
| Aurum Group Holdings Limited | East Molesey | 2018 |
| Aurum Health Ltd | Twickenham | 2023 |
| Aurum Heaven Community Group Ltd. | London | 2025 |
| Aurum Heaven Holding Ltd | London | 2025 |
| Aurum Heights Group Ltd | Wolverhampton | 2024 |
| Aurum Investments Limited | Exeter | 2004 |
| Aurum Meridian Ltd | London | 2026 |
| Aurum Palladion Investments Ltd | Brentwood | 2024 |
| Aurum Peak Limited | London | 2025 |
| Aurum Pension Trustees Limited | Leicester | 2014 |
| Aurum Private Office Limited | London | 2024 |
| Aurum REX Ltd | Earls Colne | 2019 |
| Aurum Specialty Ltd | London | 2022 |
| Aurum Strategic Investments UK Ltd | Swindon | 2021 |
| Aurum UK Holdings Limited | East Molesey | 2020 |
| Aurus Holdings Limited | Cleckheaton | 2024 |
| Aurus Property Holdings 1 Limited | London | 2022 |
| Aurus Property Holdings 2 Limited | London | 2023 |
| Aurus Property Holdings 3 Limited | London | 2023 |
| Aurus Property Holdings 4 Ltd | London | 2024 |
| Aurym Ventures Limited | London | 2026 |
| Auryum IP Holdings Ltd | London | 2026 |
| Auréa Group Holding Limited | London | 2024 |
| AUS Group Limited | Oldham | 2023 |
| AUS Investments Limited | Clitheroe | 2024 |
| Ausar Holdings Ltd | London | 2026 |
| Ausbridge Capital Investment Services Ltd | Harrow | 2021 |
| Auscash Limited | Altrincham | 1993 |
| Auscrew Holdings Limited | Fareham | 2018 |
| Ausden Clark Holdings Limited | Leicester | 2023 |
| Ausher White Ltd | Gillingham | 2020 |
| Auskar Ltd | Pencoed, Bridgend | 2009 |
| Auskop Group Ltd | Knutsford | 2022 |
| Ausome APE Capital Ltd | London | 2025 |
| Ausonio Ltd | London | 2024 |
| Auspicious Property Management Ltd | Maidstone | 2020 |
| Auspicious Group Holdings Limited | London | 2023 |
| Auspicious Holdings Ltd | Waterbeach | 2024 |
| Auspicious LEE Holdings Ltd | London | 2026 |
| Aussie Holdings Limited | Brentford | 2025 |
| Aust Ltd | Newcastle | 2026 |
| Austability Group Ltd | London | 2020 |
| Austability Ltd | London | 2021 |
| Austen Estates Group Ltd | Godalming | 2021 |
| Austen Holdings Ltd | Liskeard | 2018 |
| Austen Investments Limited | London | 2008 |
| Austens Holdings Ltd | Lancaster | 2025 |
| Austere Ltd | London | 2025 |
| Austin & Co Financial Consultants Limited | Barton Upon Humber | 2005 |
| Austin and Wardle Holdings Limited | Cheltenham | 2023 |
| Austin Asset Management Ltd | Exeter | 2008 |
| Austin Brickwork Holdings Limited | Poole | 2025 |
| Austin Bridgeporth Group Ltd | Milton Keynes | 2020 |
| Austin Business Group Ltd | Holt | 2025 |
| Austin Carey Family Holdings Ltd | Stirling | 2022 |
| Austin Divall (Holdings) Limited | Arundel | 2017 |
| Austin Elliot Group Ltd | Cheltenham | 2023 |
| Austin Friars Capital Limited | Canterbury | 2021 |
| Austin Gladwell Ltd | Bishop Auckland | 2026 |
| Austin Group Holdings Ltd | Bromsgrove | 2016 |
| Austin Heath GP Limited | Nottingham | 2026 |
| Austin Holding Group Limited | Northampton | 2025 |