| Adroitprint Limited | Bristol | 2021 |
| ADS & Sons Glazing Limited | Smethwick | 2015 |
| ADS and More Ltd | London | 2021 |
| ADS Biotec Limited | Cambridge | 1996 |
| ADS Carpentry Limited | Bedford | 2024 |
| ADS Fire Services Limited | Dumfries | 2012 |
| ADS GAS Plumbing & Heating Ltd | Saltash | 2015 |
| ADS Industrial Doors Limited | Emsworth | 2015 |
| ADS Joinery Design Ltd | London | 2010 |
| ADS Joinery Limited | Hitchin | 2012 |
| ADS Laser Cutting Ltd | Leicester | 2005 |
| ADS on the Move Ltd | Belfast | 2013 |
| ADS Plant Services Ltd | Stockton-On-Tees | 2015 |
| ADS Precision Limited | Rotherham | 2000 |
| ADS Sales & Services Limited | London | 2018 |
| ADS Systems Limited | Brigg | 2014 |
| ADS Vehicle Conversions Limited | Mirfield | 2014 |
| ADS Welding & Fabrication Ltd | Swansea | 2023 |
| ADS Welding Ltd | Middlesbrough | 2020 |
| ADS Windows, Doors and Conservatories Ltd. | Rotherham | 2008 |
| Adsc Metalworks Ltd | London | 2022 |
| Adsdwood Ltd | Slough | 2026 |
| Adseal Products Limited | Warrington | 2024 |
| Adshead Ratcliffe & Company,Limited | Derbyshire | 1944 |
| Adsig Holdings Ltd | Maidstone | 2017 |
| Adsig Ltd | Maidstone | 2022 |
| Adsign Limited | Farnham | 1998 |
| ADT Defence Limited | London | 2025 |
| ADT Fabrication Services Ltd | Stockport | 2008 |
| ADT Site Services Limited | Swadlincote | 2003 |
| Adtac Ltd | London | 2025 |
| Adtec Healthcare Limited | London | 2022 |
| Adtec Systems Limited | Plymouth | 2002 |
| Adtech Polymer Engineering Limited | Frampton Mansell | 1982 |
| Adtek Prints Limited | Newcastle Upon Tyne | 2020 |
| Adtran Networks (UK) Limited | York | 1998 |
| Adtray Promotions Ltd | Leigh-On-Sea | 2020 |
| Adty Limited | Bishop Auckland | 2025 |
| ADU Design Ltd | Berkhamsted | 2019 |
| Adufram Foods Ltd | Sidcup | 2026 |
| Adun Engineering Ltd | Fareham | 2018 |
| Adusport International BVI Limited | Beckenham | 2020 |
| ADV Brightware Manufacturing Ltd. | Exhall | 2018 |
| ADV Property Services Ltd | Basildon | 2025 |
| Advace Aerospace Innovations Limited | Leicester | 2026 |
| ADVANC3D Printing Limited | Broadstairs | 2022 |
| Advance Agencies Ltd | Cardiff | 2014 |
| Advance Air Limited | Cardiff | 1998 |
| Advance Appliances Limited | Walsall | 2005 |
| Advance Automated Systems Limited | Newton Aycliffe | 2003 |
| Advance Building Solutions Limited | Sidcup | 2023 |
| Advance Central Engineering Ltd | Newton Aycliffe | 2020 |
| Advance Chimney Cameras Ltd | Horsham | 2024 |
| Advance Coatings Ltd | London | 2013 |
| Advance Commercial Bodies Ltd | Mirfield | 2013 |
| Advance Concrete Ltd | Ashford | 2025 |
| Advance Conveyor Group Ltd | Newton Aycliffe | 2023 |
| Advance Display Solutions Limited | Oxford | 1998 |
| Advance DPF Solutions Ltd | Leeds | 2017 |
| Advance Electric Services Ltd | Luton | 2011 |
| Advance Engineering (HX) Ltd | Elland | 2002 |
| Advance Engineering (UK) Ltd | King'S Lynn | 2010 |
| Advance Engineering Services (Scotland) Ltd. | Falkirk | 2001 |
| Advance Engineering Services Limited | Bala | 2004 |
| Advance Food Limited | Essex | 2005 |
| Advance Glass Doors & Windows Ltd | Reading | 2014 |
| Advance Group Holdco Limited | St. Albans | 2024 |
| Advance Heating Limited | Ipswich | 2016 |
| Advance Housing Limited | Coalville | 2002 |
| Advance Industrial Pipework Ltd | Barnsley | 2017 |
| Advance Innovation Limited | St. Albans | 2006 |
| Advance Innovation Solutions Ltd | Beckenham | 2023 |
| Advance Inspection Solutions Ltd | Minworth | 2022 |
| Advance Jewels Ltd | Haywards Heath | 2022 |
| Advance Joinery Group Ltd | Exeter | 1994 |
| Advance Labels Limited | Leicester | 2008 |
| Advance Laundry Ltd | London | 2022 |
| Advance LED Lighting Solutions Ltd | Stretton | 2016 |
| Advance Machinery Installation Ltd | Antrim | 2010 |
| Advance Machining Solutions Ltd | Chorley | 2012 |
| Advance Mobility Club Ltd | Manningtree | 2025 |
| Advance Modular Ltd | Newton Aycliffe | 2020 |
| Advance Mouldings Limited | Eastbourne | 2007 |
| Advance Office Products Ltd | Leicester | 2011 |
| Advance Online Digital Media Group Limited | Romford | 2018 |
| Advance Print Solutions Limited | Lutterworth | 2018 |
| Advance Printwear Limited | Birmingham | 2005 |
| Advance Process Solutions Ltd | Burton-On-Trent | 2025 |
| Advance Product Services Ltd. | Knaresborough | 2002 |
| Advance Quality Glazing Ltd | Oldham | 2023 |
| Advance Quality Windows & Doors Limited | Oldham | 2020 |
| Advance Security Limited | Ramsgate | 2024 |
| Advance Service Tooling (Coventry) Limited | Coventry | 2006 |
| Advance Shutters Limited | Lymington | 2008 |
| Advance Spares Limited | Wrexham | 1986 |
| Advance Steel Worx Limited | Coventry | 2022 |
| Advance Tapes Group Limited | Leicester | 1964 |
| Advance Tapes International Limited | Leicester | 1968 |
| Advance Technical Systems Ltd | Cleckheaton | 2005 |
| Advance Technology Solutions Ltd | St. Asaph | 2017 |