| Aladdin Bakery Ltd | Glasgow | 2022 |
| Aladdin Tech Limited | Redhill | 2023 |
| Aladdin's Metal Craft Limited | St. Austell | 2007 |
| Aladin Foods Limited | London | 2020 |
| Alago Limited | Bristol | 2010 |
| Alahera Ltd | Barnet | 2023 |
| Alaia Noor Ltd | Dewsbury | 2019 |
| Alaise Taylor Ltd | Manchester | 2018 |
| Alaiss One Production Ltd | London | 2019 |
| Alaizah Limited | Cambridge | 2025 |
| Alakayshee Consultancy Limited | London | 2023 |
| Alalea Ltd | Telford | 2018 |
| Alam Altawfir Ltd | London | 2023 |
| Alam Property Maintenance Ltd | London | 2023 |
| Alam Signs Ltd | Birmingham | 2016 |
| Alam Sweets Ltd | London | 2024 |
| Alamain Ltd | London | 2024 |
| Alamak! Project Limited | London | 1997 |
| Alamar Engineering Ltd. | Bury St. Edmunds | 1998 |
| Alambtechnic Ltd | Rochdale | 2025 |
| Alamein Taqa Company Ltd | Thames Ditton | 2023 |
| Alamir and Alyassin Jewellery Ltd | London | 2023 |
| Alamir Oriental Food Ltd | Nottingham | 2023 |
| Alamir-Group Ltd | Maidstone | 2023 |
| Alamo Engineering Ltd | Stretham | 2014 |
| Alamrap Holdings Limited | Portsmouth | 2023 |
| Alan & Jayne Limited | Bedworth | 2012 |
| Alan Amis-Wind QA & Client Representative Limited | Norwich | 2025 |
| Alan Anderson Manufacturing Ltd | Barnet | 2021 |
| Alan B. Petchell & Associates Limited | Stafford | 2003 |
| Alan Bexton Limited | Nottingham | 2012 |
| Alan Brown Electrical Ltd | Portsmouth | 2018 |
| Alan Bush (Engineering Services) Limited | Leeds | 1986 |
| Alan Campbell Engineering Services Limited | Trentham Lakes | 2006 |
| Alan Christie Limited | Whitley Bay | 2014 |
| Alan Church Ltd | Bingley | 2016 |
| Alan Cikunov Ltd Ltd | Grimsby | 2025 |
| Alan Clark Engineering 1991 Ltd | Nailsworth | 2019 |
| Alan Cooper Cabinetmaker Limited | Aylesbury | 1999 |
| Alan Courtenay Limited | Sowerby | 1984 |
| Alan Cross Limited | Nottingham | 1983 |
| Alan Davies (Stainless) Limited | Bury | 1985 |
| Alan Dick Broadcast Limited | Cheltenham | 2011 |
| Alan Dick Engineering Limited | Morecambe | 1973 |
| Alan Dobson Fire Equipment Sales Ltd | Middlesbrough | 2025 |
| Alan Eldridge Limited | Malvern | 2003 |
| Alan Electrical Limited | Watford | 1971 |
| Alan Farrow Electrical Ltd | Stafford | 2026 |
| Alan Floyd Limited | Notts | 2003 |
| Alan Fraser Metal Fabrications Ltd | Aberdeen | 2011 |
| Alan Gard Limited | Harrow | 1970 |
| Alan Geoffrey Joiners Limited | Wrenthorpe | 2008 |
| Alan Godrich (Sewing Machines) Limited | Northampton | 1972 |
| Alan Grice Staircase Company Limited | Burscough | 2002 |
| Alan Hannah Limited | Enfield | 1999 |
| Alan Harper Composites Ltd | Saltash | 2011 |
| Alan Heron (Architectural Joinery and Cabinet Making) Limited | Hebburn | 1999 |
| Alan Hines Refrigeration Ltd. | Hillsborough | 2015 |
| Alan Hocking Associates Ltd | Farnborough | 2024 |
| Alan Holdings Ltd | London | 2021 |
| Alan J Kidd Mechanical Engineering Ltd | Essex | 2001 |
| Alan Johns Media Ltd | Pontyclun | 2025 |
| Alan Johnson Vehicle Repairs Limited | Sevenoaks | 2002 |
| Alan Jukes Steel Framed Buildings Limited | Shropshire | 2002 |
| Alan Keef Limited | Herefordshire | 1975 |
| Alan Little Limited | Co Armagh | 1975 |
| Alan Mackay Limited | Forfar | 2001 |
| Alan Mann Aviation Group Limited | Teddington | 1968 |
| Alan Mcclelland Limited | Halesowen | 1999 |
| Alan Michael Limited | Belfast | 2024 |
| Alan Mosgrove Limited | Worksop | 2001 |
| Alan Neal Graphics Limited | Cullercoats | 2003 |
| Alan Newman Ltd | Oxon | 2005 |
| Alan Northrop Limited | Skipton | 1962 |
| Alan P. Fulton Ltd. | Renfrewshire | 2004 |
| Alan Porter Associates Limited | Troon | 2012 |
| Alan R Cross & SON Ltd | Norfolk | 2002 |
| Alan R Jones Stonemasonry Limited | St Asaph | 2006 |
| Alan Rees Associates Ltd | Walton-On-Thames | 2016 |
| Alan Rides Consultancy Ltd | Twickenham | 2017 |
| Alan Roberts Racing Limited | Holmfirth | 2015 |
| Alan Ruddock Engineering Ltd | Bury St Edmunds | 2010 |
| Alan Scott Ltd | Stanley | 2023 |
| Alan Simpson Refrigeration, Air Conditioning & Electrical Ltd | Armagh | 2008 |
| Alan Skinner Limited | South Shields | 2012 |
| Alan Spargo Limited | High Wycombe | 1975 |
| Alan Thomas Business Limited | Newport | 2013 |
| Alan Whylde Joinery Limited | Wakefield | 2004 |
| Alan Wilson Windows Limited | Bideford | 2018 |
| Alan Young Engineering Limited | Dumfries | 1992 |
| Alan's Bicycle Workshop Ltd | Bristol | 2022 |
| Alan's Ropes & Blades Ltd | Sunderland | 2023 |
| Alana Bakes Ltd | Llanelli | 2024 |
| Alana Designs Ltd | Stourbridge | 2025 |
| Alanco Agricultural Limited | Maidstone | 1986 |
| Alanco-Alamatic Limited | Near Manchester | 1973 |
| Alandar Park Limited | London | 1992 |
| Alandco Ltd | Southsea | 2023 |
| Alanex Limited | Corby | 2009 |
| Alanod Limited | Aylesbury | 1957 |