| Amenity Property (Mellent Gardens Bedworth) Limited | London | 2020 |
| Amenity Property (Millbrook Park London Phase 4A) Limited | London | 2016 |
| Amenity Property (Millbrook Park London Phase 4C) Limited | London | 2019 |
| Amenity Property (Millers Reach Stone) Limited | London | 2014 |
| Amenity Property (Oakleigh Grove Whetstone) Limited | London | 2017 |
| Amenity Property (Pennywell Walk Upton Upon Severn) Limited | London | 2016 |
| Amenity Property (Postmark London) Limited | London | 2019 |
| Amenity Property (Scarlett Oaks Shifnal) Limited | London | 2017 |
| Amenity Property (Sherford Plymouth Parcel B) Limited | London | 2017 |
| Amenity Property (Sherford Plymouth Parcel F) Limited | London | 2017 |
| Amenity Property (Sherford Plymouth Parcel G) Limited | London | 2016 |
| Amenity Property (Sherford Plymouth Parcel J) Limited | London | 2018 |
| Amenity Property (Sherford Plymouth Parcel L) Limited | London | 2018 |
| Amenity Property (Sherford Plymouth Parcel M) Limited | London | 2019 |
| Amenity Property (Sherford Plymouth Parcel S) Limited | London | 2016 |
| Amenity Property (the Hathaways Stratford) Limited | London | 2014 |
| Amenity Property (Walmley Croft Sutton Coldfield) Limited | London | 2016 |
| Amenity Weed Management Ltd | Bristol | 2024 |
| Amenta Ltd | London | 2022 |
| Amenur Candles Ltd | London | 2024 |
| American Academy Limited | South Croydon | 2017 |
| American Accountants & Lawyers Ltd. | London | 2022 |
| American Diagnostic Corporation Limited | Fareham | 1990 |
| American DRY Cleaning Company Limited | London | 2019 |
| American Espresso Limited | London | 2005 |
| American Expresso Limited | London | 2001 |
| American Food Store Limited | London | 2013 |
| American Grill Lend Lease Limited | London | 2020 |
| American Hospital Cyprus Limited | South Croydon | 2013 |
| American Pies MCR Ltd | Manchester | 2020 |
| American Pool Club Limited | Birmingham | 2022 |
| American Recreation Vehicle Club Limited | Bristol | 2022 |
| American Shutters Ltd | London | 2021 |
| American Tanning Ltd | Skelmersdale | 2014 |
| American Video Equipment (UK) Limited | Brentwood | 1992 |
| Amerihire Ltd | St. Helens | 2023 |
| Amerikan Hastahanesi Kibris Limited | South Croydon | 2013 |
| Amerikanos Ltd | Aberdeen | 2023 |
| Amersham Air Conditioning Limited | Watford | 2018 |
| Amersham Court (Commercial) Limited | Amersham | 2017 |
| Amersham Court Limited | Amersham | 2017 |
| Amersham Land Limited | Bexhill | 2023 |
| Amerson Chemicals Co., Limited | Beckenham | 2006 |
| Amethyst Court Sceptre Park RTM Company Limited | Birmingham | 2010 |
| Amethyst Lettings Holdings Limited | Camberley | 2015 |
| Amethyst London Limited | Birmingham | 2024 |
| Amethyst Wealth Solutions Ltd | Preston | 2012 |
| Amex Client Solutions Ltd | Feltham | 2018 |
| Amex Foods Limited | Isleworth | 2019 |
| Amex Retail Limited | Isleworth | 2019 |
| Amex Worldwide Limited | Isleworth | 2019 |
| AMF Associates Ltd | Bathgate | 2022 |
| AMF Bowling (Eastleigh) Limited | Hemel Hempstead | 2009 |
| AMF Inc. Ltd | Nottingham | 2017 |
| AMF Property Trading Ltd | Barnet | 2008 |
| Amfj Investments Ltd | Coventry | 2016 |
| Amflosof Limited | London | 2018 |
| Amft Services Ltd | Grimsby | 2024 |
| AMG Developments (NW) Ltd | Lichfield | 2023 |
| AMG Lighting Ltd | Stafford | 2011 |
| AMG Logistics Solutions Limited | North Weald | 2020 |
| Amgstores Ltd | London | 2023 |
| AMH Accounts Ltd | Hyde | 2012 |
| Amherst Group Limited | Brighton | 2018 |
| Amhh Holdings Ltd | Carlisle | 2023 |
| Amhurst Court RTM Company Limited | Stanmore | 2015 |
| Amhurst Park Ltd | London | 2011 |
| Amia Seafoods Ltd | Beckenham | 2015 |
| Amiah Limited | Darlington | 2022 |
| Amica Pictures Ltd | Woodstock | 2021 |
| Amicala Weybridge Opco Limited | London | 2021 |
| Amicis Legal Services Ltd | Birmingham | 2022 |
| Amico Electrical Services Limited | Gorseinon | 2000 |
| Amico Enterprises (Wales) Limited | Swansea | 1996 |
| Amicus Building Products Limited | Solihull | 2013 |
| Amie Andrews 2004 Limited | Hemel Hempstead | 2014 |
| Amie Skincare Limited | Cheltenham | 2011 |
| Amigo International Textile Limited | Manchester | 2015 |
| Amigo Sailing Team Ltd | London | 2023 |
| Amigos Barnehage Limited | London | 2007 |
| Amigos Takeaway (Lostock) Limited | Manchester | 2018 |
| Amika Property Developments Limited | Holywood | 2005 |
| Amin Enterprises Limited | Wolverhampton | 1994 |
| Amina & Taleb Empire Limited | London | 2024 |
| Aminet Limited | London | 2020 |
| Amini Beauty Limited | London | 2024 |
| Amini Brothers Trading Co., Ltd | Beckenham | 2023 |
| Amini Holding Limited | London | 2024 |
| Aminu Investments Limited | High Wycombe | 2021 |
| Amiosec Trustee Ltd | Tewkesbury | 2015 |
| Amir Global Network Ltd | London | 2013 |
| Amir Kolgrill OCH Restaurang Invest Limited | London | 2024 |
| Amira Group Holdings Limited | Milton Keynes | 2011 |
| Amira P Rentals Ltd | Horley | 2024 |
| Amira Sport Limited | Milton Keynes | 2005 |
| Amirsam Husseini Limited | Cardiff | 2025 |
| Amit Khilan Gandhi Ltd | Welling | 2024 |
| Amita Modi Limited | London | 2022 |
| Amity QA Limited | Whaley Bridge | 2018 |
| Amius Trustee Limited | London | 2021 |