| Aljazi Ltd | Pinner | 2023 |
| ALK Limited | Kettering | 1946 |
| Alkafel Limited | London | 2022 |
| Alkamade Limited | London | 2013 |
| Alkea Consultants Ltd | Darlington | 2024 |
| Alkhader Import and Export Co., Ltd | London | 2024 |
| Alkham Properties Ltd | London | 2011 |
| Alkmund Property Limited | Derbyshire | 2005 |
| Alku Ltd | Stafford | 2019 |
| ALL About Cash Ltd | Coalville | 2013 |
| ALL About Chevrons Limited | Lee On Solent | 2012 |
| ALL About Children Limited | Manchester | 2000 |
| ALL About Doors Limited | Newent | 2020 |
| ALL About Events Limited | Congleton | 2013 |
| ALL About Polythene Limited | Eastleigh | 2023 |
| ALL About the BOY Limited | London | 2023 |
| ALL About the Data Limited | Newbury | 2008 |
| ALL About Vending Ltd | Fareham | 2010 |
| ALL Access Scaffolding (South East) Limited | Ashford | 2016 |
| ALL Arms Marketing and Manufacturing Organisation Limited | Birmingham | 2007 |
| ALL Audi Ltd | Bristol | 2020 |
| ALL Autos Ltd | Edinburgh | 2026 |
| ALL Balanced Ltd | Haverfordwest | 2024 |
| ALL Bang & Strumit Limited | Telford | 2022 |
| ALL Bills Included Ltd | Birmingham | 2015 |
| ALL BIZ (UK) Limited | | 2005 |
| ALL Building & Refurbishment Solutions Ltd | Southampton | 2019 |
| ALL Business Advice Centre Ltd | Omagh | 2008 |
| ALL Car Group Limited | Altrincham | 2015 |
| ALL Car Insurance Services (G.B.) Ltd. | Holywood | 1987 |
| ALL Car Insurance Services Limited | Holywood | 1981 |
| ALL Change Please Limited | London | 2014 |
| ALL Checked UP Ltd | Macclesfield | 2022 |
| ALL Cisterns Go Plumbing and Bathroom Installations Limited | Croydon | 2006 |
| ALL Clean Business Services Limited | Chadwell Heath | 2017 |
| ALL Counties Finance Limited | Stockton-On-Tees | 1980 |
| ALL D&Co Designs Ltd | Norwich | 2021 |
| ALL Drain Solutions Ltd | Birmingham | 2021 |
| ALL Ears! Independent Hearing Specialists Ltd | Maidstone | 2025 |
| ALL Eight Group Ltd | Spalding | 2024 |
| ALL Eight Ltd | Spalding | 2024 |
| ALL Elite Estates Limited | Marazion | 2024 |
| ALL Elite Property Limited | Marazion | 2022 |
| ALL England Motor Park Limited(The) | London | 1928 |
| ALL Figured Ltd | London | 2025 |
| ALL Fire Group Holdings Ltd | Horsham | 2026 |
| ALL Fire Ltd | Craigavon | 2014 |
| ALL Fireplaces Limited | Romsey | 2011 |
| ALL Fixed Construction Ltd | Bristol | 2022 |
| ALL Furniture Store Limited | Chippenham | 2015 |
| ALL Gym Safety Services Limited | Wrexham | 2021 |
| ALL Health Matters Trustee Limited | Canterbury | 2021 |
| ALL Heli Parts Limited | Cheltenham | 2020 |
| ALL Heli Spares Limited | Cheltenham | 2020 |
| ALL in One Assets Limited | Barugh Green | 2015 |
| ALL in the Planning Ltd | London | 2018 |
| ALL Internet Limited | London | 2016 |
| ALL Kind Scaffolding Limited | King'S Lynn | 2016 |
| ALL Lets Ltd | Orpington | 2012 |
| ALL Lights OUT Ltd | Dungannon | 2024 |
| ALL Matter in Space Ltd | London | 2025 |
| ALL Medical EU Services Ltd | London | 2016 |
| ALL Offshore Limited | Chester | 2013 |
| ALL Phases Limited | Southampton | 2021 |
| ALL Refine (UK) Ltd | London | 2006 |
| ALL Saints Villas Road 1965 Limited | Cheltenham | 2014 |
| ALL Sales Ltd | Orpington | 2018 |
| ALL Season Chutney Company Limited | Feltham | 2021 |
| ALL Seasons Cleaning (SW) Ltd | Plymouth | 2009 |
| ALL Seasons Glamping Ltd | Maidstone | 2017 |
| ALL Seasons Group Services Limited | Loughton | 2018 |
| ALL Seasons Landscape Ltd | Plymouth | 2009 |
| ALL Seasons Paving Limited | Morecambe | 2008 |
| ALL Seasons Roof Ltd | Ferndown | 2017 |
| ALL Seasons Tree Care Limited | Henley On Thames | 2012 |
| ALL Seeing Creative Limited | London | 2025 |
| ALL Sensors Limited | Leamington Spa | 2019 |
| ALL SPARES247 Limited | Birmingham | 2021 |
| ALL Supplies Hire Ltd | Leamington Spa | 2013 |
| ALL Tails Essential Pet Services Limited | Bridgwater | 2024 |
| ALL Tanned UP and Ready to Glow Ltd | Windsor | 2024 |
| ALL TEL EOT Limited | Thornbury | 2020 |
| ALL Terrain Specialist Tyres Limited | Ulverston | 2013 |
| ALL That's Bellissimo Ltd | Poole | 2015 |
| ALL the Properties Limited | London | 2017 |
| ALL Things (NE) Ltd | Hartlepool | 2022 |
| ALL Things Code Limited | Northampton | 2017 |
| ALL Things Hospitality Ltd | Milton Keynes | 2024 |
| ALL Things Sorted Limited | Keighley | 2010 |
| ALL to POT Limited | Angus | 2001 |
| ALL Town Metals Ltd | Swansea | 2014 |
| ALL Trades (Network) Ltd | Blackburn | 2004 |
| ALL Type Flooring (South East) Ltd | Gravesend | 2025 |
| ALL U Need Plumbing Ltd | Milnrow | 2013 |
| ALL UK (Services) Limited | Sutton Coldfield | 2015 |
| ALL UK Businesses Ltd | Birmingham | 2020 |
| ALL Wales Auction / Ocsiwn Eiddo Cymru Limited | Bangor | 2009 |
| ALL WIN Conveyor Belting Co., Ltd. | London | 2021 |
| ALL Your Appliances Ltd | Winsford | 2022 |
| All's Well Entertainment Limited | York | 2016 |