| Adam Smith Investments Limited | Lasswade | 1989 |
| Adam Smith Limited | Lasswade | 1989 |
| Adam Summit Capital Limited | London | 2026 |
| Adam Turner Management Limited | Hemel Hempstead | 2013 |
| Adam W Consultancy Limited | Bolton | 2024 |
| Adam Wareham Actuarial Consulting Limited | Amersham | 2010 |
| Adam Wheatley 2019 Ltd | Chichester | 2019 |
| Adam Wild Mortgages Ltd | Rossendale | 2024 |
| Adam Wilson Associates Ltd | Liverpool | 2021 |
| Adam ZEN Limited | London | 2015 |
| Adamant Group Ltd | London | 2024 |
| Adamant Investment Advisors Ltd | Godstone | 2024 |
| Adamant Investment Partners Group Ltd | Godstone | 2024 |
| Adamantean Asset Finance Limited | Basingstoke | 2021 |
| Adamantean Consulting Limited | Basingstoke | 2018 |
| Adamantean Limited | Basingstoke | 2016 |
| Adamantine Group Ltd | Bury St. Edmunds | 2019 |
| Adamantium International Ltd | London | 2022 |
| Adamas Aureum Holdings Ltd | Ruislip, | 2026 |
| Adamas Investments Limited | Chichester | 2024 |
| Adamco (Holdings) Limited | Liversedge | 2015 |
| Adame United Ltd | London | 2026 |
| Adamfxcapitals Ltd | Cardiff | 2021 |
| Adami Holdings Ltd | Bristol | 2026 |
| Adamis Capital Ltd | Watford | 2024 |
| Adamis Principle Ltd | London | 2016 |
| Adamkenjiblu Ltd | London | 2014 |
| Adamo Enterprises Ltd | London | 2018 |
| Adams & Associates Ltd | Wellingborough | 2004 |
| Adams & Bowles Wealth Management Ltd | West Malling | 2019 |
| Adams & Co Accountants Limited | Bolton | 2021 |
| Adams & Howling (Holdings) Limited | Norwich | 2024 |
| Adams & Styles Ventures Ltd | London | 2015 |
| Adams Advisers Limited | Tunbridge Wells, Kent | 2021 |
| Adams and Bennett Holdings Limited | Birmingham | 2022 |
| Adams and Green Holdings Limited | Hessle | 2025 |
| Adams Capital Limited | London | 2024 |
| Adams DS Properties Limited | Cardiff | 2021 |
| Adams Family Holding Limited | Bradford | 2024 |
| Adams Financial Planning Limited | Warmley | 2010 |
| Adams Holdings (N. Wales) Limited | Rhyl | 2021 |
| Adams Holdings Ltd | Stoke-On-Trent | 2020 |
| Adams Housing (Holdings) Limited | Birmingham | 2010 |
| Adams Infra Holdings Limited | Knaresborough | 2025 |
| Adams Investments Limited | Corby | 1922 |
| Adams Lake Limited | Ormskirk | 2026 |
| Adams London Holdings Limited | London | 2024 |
| Adams Moore Holdings Ltd | Tamworth | 2005 |
| Adamson Holdings (Scotland) Limited | Cupar | 2024 |
| Adamson Wray Ltd | Halifax | 2024 |
| Adamsons Group Ltd | Bradford | 2020 |
| Adanac Financial Services Limited | Martock | 2002 |
| Adanco Financial Limited | Bridgnorth | 2020 |
| Adani Cleantech Two Holdings Limited | London | 2016 |
| Adani Cleantech Two Limited | London | 2015 |
| Adani Energy Cleantech Two Holdings Limited | London | 2016 |
| Adani Energy Holdings Limited | London | 2015 |
| Adani Energy Two Holdings Limited | London | 2016 |
| Adani Fifteen a Holdings Limited | London | 2018 |
| Adani Fifteen a Limited | London | 2018 |
| Adani Fifteen Holdings Limited | London | 2018 |
| Adani Fifteen Limited | London | 2018 |
| Adani Seven a Limited | London | 2016 |
| Adani Seven Limited | London | 2015 |
| Adani Seventeen a Holdings Limited | London | 2018 |
| Adani Seventeen a Limited | London | 2018 |
| Adani Seventeen Holdings Limited | London | 2018 |
| Adani Seventeen Limited | London | 2018 |
| Adani SIX a Limited | London | 2017 |
| Adani SIX Limited | London | 2017 |
| Adani Thirteen a Limited | London | 2018 |
| Adani Thirteen Limited | London | 2018 |
| Adanola Holdings Limited | Manchester | 2024 |
| Adapay Ltd | London | 2025 |
| Adapt Biogas Financeco Limited | London | 2021 |
| Adapt Biogas Holdco Limited | London | 2021 |
| Adapt Capital Ltd | Esher | 2025 |
| Adapt Finance Group Ltd | Esher | 2025 |
| Adapt Finance Investment Group Limited | Esher | 2017 |
| Adapt Financial Planning Limited | Stockton-On-Tees | 2015 |
| Adapt Funding Limited | Esher | 2014 |
| Adapt Local Ltd | London | 2016 |
| Adapt Partners Limited | Esher | 2018 |
| Adaptable Services Group Ltd | Wiiltshire | 2018 |
| Adaptable Trading Co Limited | London | 2003 |
| Adaptable Travel (Holdings) Ltd | Smethwick | 2024 |
| Adaptar Solutions Limited | Norwich | 2003 |
| Adaptax Investments Ltd | Isleworth | 2025 |
| Adaptive Custodial Services Ltd | Altrincham | 2026 |
| Adaptive Energy Intelligence Ltd | London | 2025 |
| Adaptive Finance Ltd | Ashton-Under-Lyne | 2013 |
| Adaptive Group Technology Limited | London | 2023 |
| Adaptive Media Ltd | London | 2019 |
| Adaptive Money Limited | Ashton-Under-Lyne | 2015 |
| Adaptive Mortgage & Protection Solutions Ltd | Northampton | 2021 |
| Adaptive Rigging Technologies Ltd | Grantham | 2026 |
| Adaptivecomms Group Limited | Southport | 2019 |
| Adaptogenics Limited | Hitchin | 2021 |
| Adar Holdings Ltd | Gateshead | 2021 |
| Adare International Holdings Limited | London | 2017 |