| Alpha & Omega Investments Limited | Bury St. Edmunds | 2020 |
| Alpha & Omega Trading Company Limited | London | 2009 |
| Alpha 2019 Unlimited | London | 2019 |
| Alpha Academic Ltd | Oxford | 2015 |
| Alpha Active Investments Limited | London | 2016 |
| Alpha Adhesives (Holdings) Limited | Stourport On Severn | 2024 |
| Alpha Agency Solutions Ltd | London | 2022 |
| Alpha Air Holdings Limited | Leicester | 2019 |
| Alpha Amber Investments Limited | London | 2019 |
| Alpha Apex Global Ltd | London | 2023 |
| Alpha Asset Finance Ltd | Grantham | 2018 |
| Alpha Assetable Ltd | Grimsby | 2024 |
| Alpha AUR Limited | London | 2016 |
| Alpha Axiom Holdings Ltd | London | 2024 |
| Alpha B Investments Corp Ltd | London | 2025 |
| Alpha Bank London Limited | London | 1922 |
| Alpha Base Group Limited | London | 2026 |
| Alpha Beta Cappa Ltd | Gosfield | 2019 |
| Alpha Beta Partners Limited | Ascot | 2017 |
| Alpha Beta Private Wealth Limited | Ascot | 2024 |
| Alpha Bidco Limited | London | 2022 |
| Alpha Biolaboratories Holdings Limited | Warrington | 2023 |
| Alpha Bravo Delta Holdings Limited | Nottingham | 2020 |
| Alpha Bravo Security Ltd | Bradford | 2023 |
| Alpha Brokers Limited | Bishop'S Stortford | 2002 |
| Alpha Brokers Services Ltd | Evesham | 2024 |
| Alpha Business Concepts Limited | Blandford Forum | 2025 |
| Alpha Business Finance Ltd | Grantham | 2023 |
| Alpha Capital & Debt Advisory Services Ltd | London | 2020 |
| Alpha Capital Compliance Limited | Wimbledon, | 2013 |
| Alpha Capital Finance Ltd | Grays | 2010 |
| Alpha Capital Investment Partners Ltd. | London | 2016 |
| Alpha Capital Savings and Loans PLC | London | 2019 |
| Alpha Charlie Security Ltd | Slough | 2024 |
| Alpha CIG UK Limited | London | 2023 |
| Alpha Claims & Hire Ltd | Birmingham | 2014 |
| Alpha Claims Ltd | Birmingham | 2023 |
| Alpha Coatings Holdings Ltd | Sheerness | 2020 |
| Alpha Coatings Investments Ltd | Sheerness | 2022 |
| Alpha Commercial Brokers Ltd | Evesham | 2025 |
| Alpha Commercial Holdings Limited | Halesowen | 2021 |
| Alpha Credit Consultants Limited | Ashford | 2000 |
| Alpha Cygni Investment Management Ltd | Norwich | 2020 |
| Alpha Developments (UK) Holdings Limited | Clitheroe | 2024 |
| Alpha Dog Trading Group Ltd | London | 2018 |
| Alpha Dora Group Ltd | Colchester | 2021 |
| Alpha Effect Global Limited | Harpenden | 2020 |
| Alpha Engineering Solutions Holdings Limited | Stoke-On-Trent | 2025 |
| Alpha Ethical Investments Limited | London | 2017 |
| Alpha Family Holdings Limited | Haywards Heath | 2024 |
| Alpha Family Investments Ltd | Haywards Heath | 2022 |
| Alpha Financial Consultants (Somerset) Ltd | Taunton | 2006 |
| Alpha Financial Experts Limited | Ashford | 2020 |
| Alpha Financial Management Limited | Merseyside | 2002 |
| Alpha Funding Limited | Wirral | 2021 |
| Alpha Funding Solutions Ltd | Eastleigh | 2025 |
| Alpha FX Institutional Limited | London | 2018 |
| Alpha FX Limited | London | 2004 |
| Alpha GB Holdings Ltd | Lytham St Annes | 2026 |
| Alpha Global Partners Ltd. | Hounslow | 2023 |
| Alpha Global Works Ltd | Birmingham | 2021 |
| Alpha Group Bidco Limited | London | 2021 |
| Alpha Group International Limited | London | 2010 |
| Alpha Group London Ltd | London | 2020 |
| Alpha Group Midco Limited | London | 2021 |
| Alpha Group Topco Limited | London | 2021 |
| Alpha Group UK Holdings Ltd | Harpenden | 2026 |
| Alpha Healthcare Holdings Limited | Milton Keynes | 1995 |
| Alpha Holdco Limited | London | 2024 |
| Alpha Holdings (N.I.) Limited | Hillsborough | 2019 |
| Alpha Holdings (Worcestershire) Limited | Evesham | 2024 |
| Alpha Holdings Group Limited | Hereford | 2025 |
| Alpha Holdings Liverpool Limited | Liverpool | 2019 |
| Alpha House Lettings Limited | Ilfracombe | 2023 |
| Alpha House Wealth Management Limited | Bath | 2019 |
| Alpha Independent Financial Planning Limited | Manchester Road | 2004 |
| Alpha Independent Financial Solutions Limited | Chesterfield | 2013 |
| Alpha Index LAB Limited | Bury St. Edmunds | 2024 |
| Alpha Insurance Analysts Ltd. | London | 1994 |
| Alpha Intermediary International Limited | London | 2022 |
| Alpha Investment Holdings Limited | London | 2021 |
| Alpha Investment Management Ltd | London | 2014 |
| Alpha Investment Office Limited | Cambridge | 2024 |
| Alpha Investments and Financial Planning Ltd | Harrow | 2010 |
| Alpha K Invest Limited | London | 2025 |
| Alpha Key Capital Limited | London | 2013 |
| Alpha Leasing (NO. 12) Limited | London | 2017 |
| Alpha Leasing (NO. 14) Limited | London | 2018 |
| Alpha Leasing (NO. 4) Limited | London | 2001 |
| Alpha Leasing (NO.10) Limited | London | 2014 |
| Alpha Leasing (NO.11) Limited | London | 2015 |
| Alpha Leasing (NO.9) Limited | London | 2012 |
| Alpha Leasing Limited | London | 1999 |
| Alpha Legals Limited | London | 2020 |
| Alpha Lima Holdings Limited | London | 2022 |
| Alpha Management Holdings Ltd | Stanstead Abbotts | 2026 |
| Alpha Master NN Ltd | Greenford | 2025 |
| Alpha Medical International Holdings Ltd | Sheffield | 2026 |
| Alpha Midco 1 Limited | London | 2022 |
| Alpha Midco 2 Limited | London | 2022 |