| Alaska Engineering Ltd | Birmingham | 2016 |
| Alaska Plot 25 Limited | Shrewsbury | 2021 |
| Alaska Plot 26 Limited | Shrewsbury | 2021 |
| Alaska Plot 27 Limited | Shrewsbury | 2021 |
| Alastair Aitken Limited | Tarbert | 2024 |
| Alastair.Electrician Ltd | Edinburgh | 2024 |
| Alatas Yachting Ltd | Liverpool | 2026 |
| Alauda Limited | Henfield | 2015 |
| Alayavijnana Limited | London | 2024 |
| Alaykhan Legal Services Ltd. | Halifax | 2018 |
| ALB Invest & Service Ltd | Manchester | 2024 |
| Alba Investment Properties Holdings Limited | London | 2009 |
| Alba Investment Properties Limited | London | 2009 |
| Alba LAS Pensions Management Limited | Edinburgh | 1976 |
| Alba Nova Limited | Wallyford | 2007 |
| Alba Proteins Limited | Dumfriesshire | 1996 |
| Alba Safety Solutions Limited | Dunfermline | 2020 |
| Alba Tyres Limited | Winchester | 1985 |
| Albachem International Limited | Penicuik | 2001 |
| Albacore Marine Ltd | London | 2024 |
| Albadr Import and Export Co., Ltd | London | 2024 |
| Alban Moves Limited | Stevenage | 2007 |
| Albanian Robotics Ltd | London | 2025 |
| Albann Irvine Limited | Irvine | 2000 |
| Albany Brands Limited | Manchester | 2001 |
| Albany Capital Management Limited | London | 2017 |
| Albany Leadership Ltd | Hitchin | 2026 |
| Albany Meadows Limited | London | 2012 |
| Albany Software Limited | Reading | 1989 |
| Albany Tobacco Company Limited | Manchester | 1996 |
| Albar Engineering Limited | Moreton | 2012 |
| Albaroudi Export & Import Co., Ltd | London | 2025 |
| Albatros Cromac Smith Limited | Leamington Spa | 2013 |
| Albatros Yachting Ltd | London | 2026 |
| Albatross 2011 Ltd | Edinburgh | 2011 |
| Albatross Bidco Limited | Shoreham | 2019 |
| Albatross Holdings Limited | Larkfield Aylesford | 1995 |
| Albatross Midco Limited | Shoreham | 2019 |
| Albatross Topco Limited | Shoreham | 2019 |
| Albatross Tours Limited | Larkfield | 1985 |
| Albatrosses Limited | Smethwick | 2018 |
| Albedo Studio Limited | Luton | 2015 |
| Albemarle Staveley Evans Limited | Preston | 2003 |
| Albero Yachting Limited | London | 2024 |
| Albert Abraham Michelson Limited | Eastcote, Pinner | 2014 |
| Albert Alessi Limited | Harrogate | 2025 |
| Albert and BB Investments Limited | Slough | 2009 |
| Albert Boiler Works Limited | Co. Down | 1968 |
| Albert Einstein Universitaet Limited | Egham | 2008 |
| Albert Goodman 1 Limited | Taunton | 2024 |
| Albert Goodman Corporate Finance Limited | Taunton | 2016 |
| Albert House (Didsbury) Management Company Limited | Manchester | 2013 |
| Albert Joseph Ltd | London | 2019 |
| Albert Mills Limited | Goole | 1990 |
| Albert Residents Limited | London | 2015 |
| Albert Street 1963 Limited | Stevenage | 2013 |
| Albert Street Management Limited | Whitstable | 1999 |
| Alberton Limited | Leek | 1964 |
| Alberts 1961 Limited | Gateshead | 2013 |
| Albi Plumbing & Heating Ltd | Normanton | 2018 |
| Albion 1963 Limited | Manchester | 2013 |
| Albion Associates Ltd | London | 1994 |
| Albion Books Limited | Tonbridge | 2017 |
| Albion Botanicals Limited | Poole | 2012 |
| Albion Close 05/10/56 Limited | Hertford | 2013 |
| Albion Distribution Limited | Barnsley | 2007 |
| Albion Drilling Holdings Ltd | Stirling | 2017 |
| Albion Environmental Trustees Limited | Ayr | 2020 |
| Albion Evolution Ltd | London | 2020 |
| Albion Fasteners & Tools Ltd | Yeovil | 2024 |
| Albion Green Investments Ltd | Maldon | 2009 |
| Albion Hobbies Limited | Bournemouth | 2015 |
| Albion Investsments Limited | London | 2021 |
| Albion Medlock Limited | Preston | 1998 |
| Albion Recycling (NI) Ltd | Banbridge | 2012 |
| Albion Trade UK Ltd | Dunstable | 2017 |
| Albion Valves & Controls Limited | Barnsley | 2007 |
| Albion Valves (Europe) Limited | Barnsley | 2021 |
| Albion Valves (Group) Limited | Barnsley | 2021 |
| Albion Valves (Holdings) Limited | Barnsley | 2021 |
| Albion Valves Limited | Barnsley | 2019 |
| Albion-Roofing (SW) Ltd | Bristol | 2025 |
| Alboney Limited | Canvey Island | 2022 |
| Albourne Trustee Limited | London | 2025 |
| Albright Investments Limited | Oldbury | 2019 |
| Albrighton Property Limited | Wolverhampton | 2003 |
| Albrin Property Ltd | Epsom | 2020 |
| Albrin Subsidiary Limited | Epsom | 2014 |
| Albro Windows & Doors Limited | Greenford | 2011 |
| Albury Limited | Cranleigh | 2008 |
| Alby's Property Solutions Limited | Tetbury | 2021 |
| Alca Tack Limited | London | 2025 |
| Alcamed Bohemia Ltd | London | 2023 |
| Alcamp Limited | Belfast | 2016 |
| Alcan Chemicals Limited | London | 1938 |
| Alcap Ltd | London | 2012 |
| Alchem Industries Limited | Ross-On-Wye | 1986 |
| Alchemist Ventures Limited | Bristol | 2004 |
| Alchemy & Stone Limited | Maldon | 2020 |
| Alchemy Accountants Limited | Preston | 2022 |