| ALL Natural Pupcakes Ltd | Glasgow | 2020 |
| ALL Natural Soap Co Limited | Huntingdon | 2013 |
| ALL Natural Ways Ltd | Stroud | 2021 |
| ALL Online Limited | Staines-Upon-Thames | 2017 |
| ALL Options Limited | Surrey | 2007 |
| ALL OUT Archers Limited | Lancaster | 2021 |
| ALL Pallets Limited | Lewes | 1993 |
| ALL Plane 31 Ltd | Mildenhall | 2024 |
| ALL Plant Operator and Repair Services Limited | Mountain Ash | 2021 |
| ALL Plates Limited | Standerwick | 2019 |
| ALL Points West Embroidery & Print Ltd | Penzance | 2021 |
| ALL Print Equipment Ltd | Cannock | 2009 |
| ALL Property Enterprise Ltd | Telford | 2024 |
| ALL Pulley & Gear Developments Limited | Rochester | 1999 |
| ALL Pump & Valve Limited | Shrewsbury | 2013 |
| ALL Purpose Secondary Double Glazing Limited | Romford | 2018 |
| ALL Records Broken Ltd | Wakefield | 2018 |
| ALL Renault Ltd | London | 2014 |
| ALL Renewables Britain Limited | Upminster | 2022 |
| ALL Right NOW Limited | Chipping Warden | 2000 |
| ALL Round Embroidery Ltd | Newport | 2025 |
| ALL Round Engineering Limited | Maidenhead | 1998 |
| ALL Round GAS Services Limited | Coventry | 2007 |
| ALL Round Workwear Limited | Newport | 2025 |
| ALL Safe & Secure Limited | Menston | 2004 |
| ALL Saints Brewing Company Ltd | Cardiff | 2022 |
| ALL Scene ALL Props Limited | Crowborough | 2011 |
| ALL Sculptures Great & Small Ltd | Bridgend | 2022 |
| ALL Season Foods (Sandwich) Ltd | London | 2019 |
| ALL Seasons Blinds Limited | Caerphilly | 2002 |
| ALL Seasons Boat Covers Ltd | Bolton | 2024 |
| ALL Seasons Boat Cushions Ltd | Bolton | 2024 |
| ALL Seasons Driveways Ltd | Blackburn | 2025 |
| ALL Seasons Equipment Ltd | Hemel Hempstead | 2017 |
| ALL Seasons Global Limited | Birmingham | 2025 |
| ALL Seasons Leisure Limited | Chester Le Street | 2019 |
| ALL Seasons Outdoor Living Ltd | Lochgelly | 2024 |
| ALL Seasons Repair & Alterations Ltd | Luton | 2023 |
| ALL Seasons Waterproof Covers Ltd | Bolton | 2014 |
| ALL Seasons Windows (N/E) Limited | Stockton-On-Tees | 2008 |
| ALL Services 360 Electrical Ltd | London | 2021 |
| ALL Services South Ltd | Four Marks | 2023 |
| ALL SHE Wants Clothing Ltd | Leicester | 2020 |
| ALL Sign Solutions Limited | Darlington | 2003 |
| ALL Signs & Design Limited | Weston-Super-Mare | 2004 |
| ALL Signs (Scotland) Limited | | 2001 |
| ALL Signs Direct Ltd | Darlington | 2020 |
| ALL Sorts Maintenance Limited | Bristol | 2024 |
| ALL SOX Limited | Alfreton | 1993 |
| ALL Sparks Technical Ltd | Bedford | 2015 |
| ALL Sports Chairs Limited | Knutsford | 2021 |
| ALL Square Carpentry Ltd | Rochford | 2025 |
| ALL Stars Nutrition Ltd | London | 2022 |
| ALL Start Car Wash Ltd | Newry | 2025 |
| ALL Steel Bending Limited | Rotherham | 2017 |
| ALL Steel Designs UK Limited | Leicester | 2024 |
| ALL Steel Fabrications Limited | Nottingham | 2025 |
| ALL Steel Fabs Ltd | Benfleet | 2022 |
| ALL Steel Fencing Nationwide Ltd | Wednesbury | 2021 |
| ALL Steel Fencing Supplies Ltd | Wednesbury | 2024 |
| ALL Steel for Building Limited | Exeter | 2019 |
| ALL Steel London Ltd | West Molesey | 2025 |
| ALL Steel Tank Company Ltd | Stanley | 2025 |
| ALL Steels ALL Designs Ltd | Chessington | 2018 |
| ALL Style Bodies Limited | Pump Lane Grazeley Reading | 2000 |
| ALL Style Ltd | Enfield | 2024 |
| ALL Tail Lifts Limited | Whitchurch | 2017 |
| ALL Tech Exchange Ltd | Glasgow | 2025 |
| ALL Technical Support Limited | High Wycombe | 2024 |
| ALL Terrain ALL Electric Ltd | Glasgow | 2019 |
| ALL Terrain Engineering Limited | Barton Under Needwood | 2016 |
| ALL That (MFG) Ltd | Leicester | 2017 |
| ALL That London Ltd | London | 2019 |
| ALL the Colour Ltd | Dundee | 2023 |
| ALL the Little Details Limited | Manchester | 2013 |
| ALL Things Carpentry Ltd | Gravesend | 2025 |
| ALL Things Debs Ltd | London | 2025 |
| ALL Things Decadent Ltd | Cheltenham | 2024 |
| ALL Things Furniture Limited | Portadown | 2011 |
| ALL Things Ginger Ltd | Birmingham | 2025 |
| ALL Things Greek Limited | Watford | 2018 |
| ALL Things Lavender Ltd | Paignton | 2025 |
| ALL Things Metal Limited | Dover | 2015 |
| ALL Things OIL Ltd | Upper Beeding | 2014 |
| ALL Things Print (UK) Ltd | Colchester | 2009 |
| ALL Things Rugby Ltd | Newport | 2024 |
| ALL Things Wellness Ltd | London | 2025 |
| ALL Things With Love Limited | London | 2024 |
| ALL Things Wood Ltd | Bonnybridge | 2014 |
| ALL Things Words Ltd | Bristol | 2018 |
| ALL Tied UP (UK) Limited | Ilkeston | 2012 |
| ALL Timber Frames Construction Ltd | Crediton | 2016 |
| ALL Timber Frames Ltd | Crediton | 2012 |
| ALL Timberlines Limited | Aberdeen | 1982 |
| ALL Trade Printers (Sales) Limited | Alcester | 1995 |
| ALL Traffic Products Ltd | Willenhall | 2020 |
| ALL Trim Ltd | Coventry | 2025 |
| ALL Type Engineering Limited | Dartford | 2017 |
| ALL Types Heating and GAS Ltd | Mablethorpe | 2013 |
| ALL Tyrez Ltd | Feltham | 2025 |