| Alliance Equity Partners Ltd | London | 2018 |
| Alliance Finance Limited | Bristol | 2014 |
| Alliance Financial Consultancy Limited | Northampton | 2019 |
| Alliance Financial Consultants Limited | | 1987 |
| Alliance Financial Ltd | Glasgow | 2025 |
| Alliance Financial Options Ltd | Glasgow | 2019 |
| Alliance Financial Protection Limited | Sutton Coldfield | 2025 |
| Alliance Fund Managers Nominees Limited | Liverpool | 2001 |
| Alliance Funding Limited | St. Helens | 2018 |
| Alliance FX Limited | Ringwood | 2019 |
| Alliance Global Banco Ltd | Bristol | 2022 |
| Alliance Global Finance Ltd | London | 2021 |
| Alliance Global Holdings Limited | London | 2025 |
| Alliance Group Holdings Ltd | Stoke-On-Trent | 2022 |
| Alliance Group Management (Holdings) Limited | Greenock | 2022 |
| Alliance Group UK Holdings Limited | Chelmsford | 2020 |
| Alliance Health PMI Limited | Birmingham | 2021 |
| Alliance Heating Group Ltd | Reading | 2023 |
| Alliance Holdco 1 Ltd | London | 2022 |
| Alliance Infrastructure Group Limited | Fleet | 2026 |
| Alliance Intermediaries Ltd | London | 2024 |
| Alliance Investments and Holdings Ltd | Birmingham | 2024 |
| Alliance Laundry Finance Ltd | London | 2014 |
| Alliance Leasing Limited | Nottingham | 1990 |
| Alliance Marine UK Holdings Limited | Southampton | 2018 |
| Alliance Medical Indemnity Limited | Birmingham | 2011 |
| Alliance Midco Ltd | London | 2022 |
| Alliance Mortgages AE Limited | Leicester | 2024 |
| Alliance Mortgages Ltd | Wellingborough | 2018 |
| Alliance One International Holdings, Ltd. | Camberley | 2018 |
| Alliance Pharma Limited | Chippenham | 2001 |
| Alliance Property Finance Limited | Doncaster | 2022 |
| Alliance Risk Investments Ltd | Northampton | 2016 |
| Alliance Staffing & Security Limited | Luton | 2025 |
| Alliance Surfacing Holdings Limited | Hungerford | 2021 |
| Alliance Teesside Ltd | Stockton-On-Tees | 2013 |
| Alliance Topco Ltd | London | 2022 |
| Alliance Tradelink Ltd | Northolt | 2020 |
| Alliance Travel Group Ltd | Manchester | 2025 |
| Alliance Travel Holdings Ltd | Richmond | 2016 |
| Alliance Wine Group Limited | Beith | 2017 |
| Alliance Witan PLC | Dundee | 1888 |
| Alliance-Pioneer Holdings Ltd | Plymouth | 2024 |
| Alliancebernstein Holdings Limited | London | 2009 |
| Alliancebernstein Limited | London | 1990 |
| Alliancebernstein Preferred Limited | London | 2009 |
| Allianser Capital GBR. Ltd | London | 2025 |
| Alliantist Holdings Limited | Brighton | 2017 |
| Allianz (UK) Limited | London | 1986 |
| Allianz Chapter UK Next Venture Limited | London | 2025 |
| Allianz Chapter UK Reit Investments Limited | London | 2025 |
| Allianz Europe Limited | London | 1981 |
| Allianz Global Investors UK Limited | London | 2018 |
| Allianz Holdings PLC | London | 2004 |
| Allianz Home Equity Income 1 (Funding Member) Limited | London | 2020 |
| Allianz Home Equity Income GP 1 Limited | London | 2018 |
| Allianz Insurance PLC | Surrey | 1905 |
| Allianz Marine (UK) Limited | London | 1993 |
| Allianz Pension Fund Trustees Limited | London | 1972 |
| Allianz Renewable Energy Fund Management 1 Limited | London | 2008 |
| Allianz Renewable Energy Partners II Limited | London | 2009 |
| Allianz Renewable Energy Partners IV Limited | London | 2009 |
| Allianz Renewable Energy Partners V Limited | London | 2007 |
| Allianz Renewable Energy Partners VI Limited | London | 2016 |
| Allianz Renewable Energy Partners Viii Limited | London | 2016 |
| Allianz Services (UK) Limited | London | 1931 |
| Allianz Technology Trust PLC | London | 1995 |
| Allianz UK Distribution Limited | London | 1995 |
| Allianz UK Infrastructure Debt GP 2 Limited | London | 2017 |
| Allianz UK Infrastructure Debt GP Limited | London | 2014 |
| Allica Bank Limited | London | 2011 |
| Allica Bridging Finance Limited | London | 2017 |
| Allica Financial Services Limited | London | 2020 |
| Allicante Limited | London | 2010 |
| Allied Acquisitions Limited | Penzance | 2024 |
| Allied Aerosystems Trustees Limited | Pontypridd | 2004 |
| Allied Asset Finance Limited | Radstock | 2003 |
| Allied Assets Holdings Limited | Ilford | 2024 |
| Allied Assist Ltd | Swansea | 2019 |
| Allied Building and Property Claims Management Services Ltd | Letchworth | 2015 |
| Allied Business Finance Limited | Stewarton | 2023 |
| Allied Business Services Rochdale Limited | Manchester | 2022 |
| Allied Capital Invest Limited | Cobham | 2006 |
| Allied Care Head Office Limited | Woking | 2019 |
| Allied Credit Limited | Rotherham | 1998 |
| Allied Domecq Pensions Limited | London | 1977 |
| Allied Dunbar Assurance PLC | Swindon | 1965 |
| Allied F S Holdings Ltd | Ashford | 2022 |
| Allied Filter Systems Group Limited | Manchester | 2024 |
| Allied Financial (W-Ton) Ltd | Wolverhampton | 2008 |
| Allied Financial Consultancy Limited | Ballyclare | 2009 |
| Allied Financial Group Ltd | Maidenhead | 2025 |
| Allied Financial Services Limited | Ashford | 2004 |
| Allied Fincorp Ltd | Coventry | 2012 |
| Allied Fort Ltd | Coventry | 2011 |
| Allied General Insurance Services Limited | Doncaster | 1983 |
| Allied Glasgow Holdings Limited | Glasgow | 2024 |
| Allied Gold Holdings Limited | Coventry | 2022 |
| Allied Gold Investments Ltd | Coventry | 2024 |
| Allied Group Holdings Limited | Marston Moretaine | 2000 |