| ALL Things Finance Ltd | London | 2020 |
| ALL Things Fire & Security Limited | Ossett | 2014 |
| ALL Things Home Ltd | London | 2020 |
| ALL Things IC Limited | London | 2013 |
| ALL Things Law Ltd | London | 2019 |
| ALL Things Leisure Limited | Uttoxeter | 2020 |
| ALL Things Licensing Limited | Barnet | 2007 |
| ALL Things Limited | London | 2017 |
| ALL Things Live Ltd | Thornton Heath | 2024 |
| ALL Things Local Limited | Belper | 2009 |
| ALL Things Marketing Ltd | Bristol | 2015 |
| ALL Things Photography Ltd | Ely | 2025 |
| ALL Things Procurement Limited | Barnsley | 2019 |
| ALL Things Product Limited | Dorchester | 2019 |
| ALL Things Residential Ltd | London | 2025 |
| ALL Things ROI Ltd | Kington | 2025 |
| ALL Things Spirits Ltd | London | 2023 |
| ALL Things Strategy and Projects Ltd | London | 2022 |
| ALL Things Transport Ltd | Brighouse | 2018 |
| ALL Things XYZ Ltd | London | 2025 |
| ALL Three Corners Ltd | Reading | 2019 |
| ALL Thrive Ltd | London | 2024 |
| ALL Time Consulting Ltd | Wellingborough | 2024 |
| ALL Together Marketing Ltd | Rye | 2025 |
| ALL TOO Human Ltd | Fleet | 2023 |
| ALL TOO Social Ltd | Bury St. Edmunds | 2025 |
| ALL Torque Sales Training Limited | Cardiff | 2018 |
| ALL Trades and Services Limited | London | 2020 |
| ALL Trades Contracting Limited | Reading | 2005 |
| ALL Trades Design Limited | Pershore | 2025 |
| ALL Travel (York) Limited | York | 2013 |
| ALL Type of Waste Ltd | London | 2025 |
| ALL Types of Media Limited | London | 2024 |
| ALL Water Solutions Ltd | Uppingham | 2015 |
| ALL Ways Access Ltd | London | 2025 |
| ALL WE Have Ltd | London | 2025 |
| ALL Weather Industries Ltd | Newry | 2020 |
| ALL Weather Tracks Association | High Wycombe | 2012 |
| ALL Wells and Good Limited | Poole | 2022 |
| ALL Wills and Trusts Limited | Burton Upon Trent | 2014 |
| ALL Work and Social G&S Limited | Manchester | 2017 |
| ALL Work and Social Limited | Manchester | 2024 |
| ALL World Ltd | London | 2025 |
| ALL World Translations Ltd | Newport | 2018 |
| ALL Year Bloom Ltd | Dundee | 2019 |
| ALL YOU Ever Wished for Limited | Nelson | 2003 |
| ALL YOU Need IS Today Limited | Sheffield | 2014 |
| ALL Your Business Needs Ltd | London | 2025 |
| ALL Your Idea Ltd | Twickenham | 2022 |
| ALL Your Legals Limited | London | 2025 |
| ALL Your Marketing Services Limited | Ferndown | 2014 |
| ALL Your Prey Ltd | Swindon | 2021 |
| All-County Services Limited | Hednesford | 1991 |
| All-Encompassing Global Consult UK Ltd | London | 2025 |
| All-Engineering Inspection Services Ltd | Weymouth | 2025 |
| All-I@Moveo Ltd. | Nottingham | 2020 |
| All-In 3D Ltd | Bideford | 2024 |
| All-In Access-Ability Community Interest Company | Leicester | 2024 |
| All-In Bookkeeping Limited | Bexleyheath | 2011 |
| All-In Design Limited | Peterborough | 2011 |
| All-In Diversity & Inclusion Ltd | London | 2018 |
| All-In Sales Development Ltd | Southsea | 2025 |
| All-In-One Business Services Ltd | Walsall | 2012 |
| All-Inclusive Services Ltd | London | 2022 |
| All-Pro Finance Limited | Staines-Upon-Thames | 2018 |
| All-Pro Pixel Limited | Camberley | 2024 |
| All-Right Accountancy Services Ltd | Ashford | 2022 |
| All-Sparxx Ltd | Blackpool | 2026 |
| All-Star Accounts Ltd | London | 2019 |
| All-Tax-Solutions Limited | Reading | 2017 |
| All.Three.Points. Ltd | London | 2018 |
| ALL1 Operations Limited | Wilmslow | 2019 |
| ALL1GEAR Tech Limited | Bristol | 2024 |
| ALL1NETWORK Ltd | York | 2020 |
| ALL2 Limited | Bath | 2026 |
| ALL2AFRICA Ltd | London | 2024 |
| ALL2GETHER Limited | London | 2007 |
| ALL2PLAY4 Limited | Bournemouth | 2003 |
| ALL3MEDIA Director Limited | London | 2016 |
| ALL3MEDIA Nominee Limited | London | 2018 |
| ALL4F&B Home Services Limited | Glasgow | 2024 |
| ALL4SPREAD Consultants Limited | London | 2020 |
| Alla Engineering Ltd | Greenford | 2017 |
| Allaber Business Consultancy Limited | West Malling | 2024 |
| Allabush Controls Ltd | Basingstoke | 2011 |
| Allac Ltd | London | 2026 |
| Allacc Consultancy Limited | Crewe | 2024 |
| Allacien Limited | Billingham | 2003 |
| Allaction Limited | Stonehouse | 2020 |
| Allagi Limited | Sutton Coldfield | 2019 |
| Allaira Financial Advisory Ltd | Slough | 2025 |
| Allam AI Consulting Limited | London | 2025 |
| Allam Carbonfree Energy Ltd | Chippenham | 2019 |
| Allameddine Medical Ltd | Oldham | 2026 |
| Allamhouse Limited | Hull | 2009 |
| Allami Consulting Ltd | Loughborough | 2026 |
| Allamont Ltd | Bournemouth | 2017 |
| Allan & Co Limited | Leicester | 2012 |
| Allan & Newton Holdings Limited | Manchester | 2021 |
| Allan Access Platform Services Limited | Market Harborough | 2009 |