| Astra Asset Management UK Limited | London | 2012 |
| Astra Bidco Limited | Abingdon | 2021 |
| Astra Financials UK Limited | Harrow | 2012 |
| Astra Group Holdings Ltd | London | 2025 |
| Astra Holding Group Ltd | London | 2023 |
| Astra Investment Group Ltd | Birmingham | 2021 |
| Astra Janus Ltd | London | 2026 |
| Astra Midco Limited | Abingdon | 2021 |
| Astra Moritz Ltd | London | 2024 |
| Astra Reinvest Ltd | London | 2007 |
| Astra Seat Loader SPV Ltd | Liverpool | 2023 |
| Astra Taurus Ltd | London | 2026 |
| Astra Topco Limited | Abingdon | 2021 |
| Astra Ventures Ltd | Rochford | 2023 |
| Astra Wealth Limited | Nottingham | 2024 |
| Astra WEALTH7 Ltd | Glasgow | 2024 |
| Astract Ltd | Fareham | 2025 |
| Astrada Group Ltd | London | 2022 |
| Astraea Aegirine Studio Ltd | London | 2026 |
| Astraea Ultio Fortuna Holding UK Limited | Stoke On Trent | 2025 |
| Astraea Ventures Ltd | London | 2024 |
| Astraeus Group Limited | Battle | 2025 |
| Astral (NI) Limited | Belfast | 2014 |
| Astral Ascend Ltd | Mitcham | 2026 |
| Astral Bridge Limited | Street | 2023 |
| Astral Financial Ltd | London | 2017 |
| Astral Global Limited | Hayes | 2020 |
| Astral Hygiene Holdings Limited | St Boswells | 2025 |
| Astral North Holdings Ltd | Oldbury | 2021 |
| Astral Star Holding Company Limited | London | 2023 |
| Astraline Limited | London | 2019 |
| Astralis Capital Ltd | Woodford Green | 2024 |
| Astralis Holdings Ltd | London | 2024 |
| Astralis International Limited | Winchester | 2025 |
| Astralite Limited | Nottingham | 1961 |
| Astralpoint Limited | Bath | 1981 |
| Astramarkets Limited | London | 2025 |
| Astrapay Limited | London | 2025 |
| Astrape Financial Limited | London | 2022 |
| Astraseal (Holdings) Limited | Wellingborough | 1999 |
| Astrazeneca Finance Limited | Cambridge | 1992 |
| Astre Limited | Harrow | 2020 |
| Astrea Group Holdings Company Limited | Cambridge | 2020 |
| Astrea Holdings Limited | Hungerford | 2025 |
| Astrea Limited | Chichester | 1990 |
| Astrea London Holdings Limited | Hungerford | 2025 |
| Astrelle Insurance Services Limited | Nottingham | 1987 |
| Astrely Limited | West Drayton | 2024 |
| Astrenska Insurance Holdings Limited | London | 2016 |
| Astrenska Insurance Limited | London | 1983 |
| Astrid Advisors Ltd | London | 2019 |
| Astrid Holdings Limited | Harrogate | 2025 |
| Astrid Property Group Limited | Plymouth | 2023 |
| Astrion Global Ltd | London | 2026 |
| Astrius Holdings Limited | Runcorn | 2020 |
| Astro Bidco Limited | Cambridge | 2018 |
| Astrodene Limited | London | 2016 |
| Astrodental Holdings Limited | Romford | 2021 |
| Astroflame Holdings Limited | Winchester | 2021 |
| Astron Holding Ltd | Cardiff | 2021 |
| Astronaut Actuarial Limited | Wheathampstead | 2014 |
| Astronberg Investments Ltd | London | 1993 |
| Astronberg Operations Limited | London | 2001 |
| Astrop Capital | Banbury | 2017 |
| Astrophe UK Ltd | Cambridge | 2025 |
| Astropulvis Limited | Bristol | 2021 |
| Astrum Design Ltd | Blackburn | 2025 |
| Astrum Group Limited | London | 2024 |
| Astrum Investment Group Ltd | Harrow | 2022 |
| Astrum LLC Limited | London | 2022 |
| Asttute Smarts Solutions Limited | Sutton | 2021 |
| Astun Holdings Ltd | Banbury | 2021 |
| Astus Financial Planning Ltd | Beaconsfield | 2001 |
| Astus Group Limited | London | 2013 |
| Astus Research Ltd | London | 2013 |
| Astute 2015 Limited | Forfar | 2015 |
| Astute Capital Limited | London | 2016 |
| Astute Commercial Brokers Limited | Middlesbrough | 2025 |
| Astute Entity Limited | Hereford | 2025 |
| Astute Finance Limited | Manchester | 2018 |
| Astute Financial & Lifestyle Planning Limited | Derby | 2005 |
| Astute Financial & Mortgage Advisers Ltd | Middlesbrough | 2018 |
| Astute Financial Advice Group Limited | Ballymena | 2002 |
| Astute Financial Limited | Ballymena | 2002 |
| Astute Financial Management UK Limited | Maidstone | 2017 |
| Astute Financial Planning Limited | Wolverhampton | 2024 |
| Astute Funding Limited | Preston | 2014 |
| Astute Insurance Solutions Limited | Leeds | 2008 |
| Astute Invest Ltd | Glasgow | 2018 |
| Astute Investment Management Ltd | Ewloe | 2019 |
| Astute Money Financial Planning Ltd | Tavistock | 2013 |
| Astute Mortgages Ltd | Waterlooville | 2020 |
| Astute Pension Trustees Limited | Cleckheaton | 2013 |
| Astute Planning Limited | Dundee | 2012 |
| Astute Platform Services Limited | Maidstone | 2016 |
| Astute Private Wealth Limited | Ewloe | 2010 |
| Astute Private Wealth Management Limited | Chester | 2024 |
| Astute Property Acquisitions Corporation Limited | Redhill | 2016 |
| Astute Protection Limited | Leicester | 2026 |
| Astute Wealth Holdings Limited | Ewloe | 2019 |