| Advance Tool Hire Limited | Stourbridge | 1980 |
| Advance Training Systems Ltd | Harrogate | 2026 |
| Advance Upvc Ltd | Walsall | 2019 |
| Advance Windpower Ltd | Bellshill | 2013 |
| Advanced AC & Refrigeration Ltd | Broadstairs | 2022 |
| Advanced Access Repairs Ltd | Wakefield | 2022 |
| Advanced Access Solutions Midlands Ltd | Nottingham | 2017 |
| Advanced Acoustic Installation Services Limited | Colchester | 2021 |
| Advanced Actuators Limited | West Yorkshire | 1999 |
| Advanced Admixtures Limited | Chorley | 1989 |
| Advanced Aesthetics Training Academy Limited | Sheffield | 2017 |
| Advanced AI Diagnostics Ltd | Oxford | 2025 |
| Advanced Air (UK) Limited | Thetford | 1973 |
| Advanced Air Conditioning & Refrigeration Limited | Ellesmere Port | 2000 |
| Advanced Aluminium Design Limited | Eye | 2004 |
| Advanced Aluminium Systems Limited | Kenilworth | 2021 |
| Advanced Anaerobics Limited | Hereford | 2012 |
| Advanced Anti Carbon Solutions Limited | Market Drayton | 2019 |
| Advanced Application Solutions Ltd | Gateshead | 2024 |
| Advanced Assembling Ltd | Westcliff-On-Sea | 2025 |
| Advanced Assembly Solutions Ltd | Poole | 2024 |
| Advanced Auto Accident Repair Ltd | Birmingham | 2012 |
| Advanced Auto Conversions Ltd | Doncaster | 2022 |
| Advanced Automation and Assembly Ltd. | Sheffield | 2012 |
| Advanced Automation Solutions Limited | Milton Keynes | 2001 |
| Advanced Automotive Systems Limited | Northumberland | 2003 |
| Advanced AV Services Limited | Southampton | 2013 |
| Advanced Biofuel Solutions Ltd | Manchester | 2019 |
| Advanced Biomass Solutions Limited | Essex | 2017 |
| Advanced Biotechnologies Limited | Altrincham | 1989 |
| Advanced Biotherapeutics Ltd | London | 2020 |
| Advanced Bladetech Ltd | Gateshead | 2020 |
| Advanced BMS Ltd | Tamworth | 2022 |
| Advanced Boat Booking and More Ltd | London | 2020 |
| Advanced Bolting Solutions Limited | Leicestershire | 2002 |
| Advanced Build (Fylde) Limited | Thornton-Cleveleys | 2011 |
| Advanced Building Design Limited | Stockport | 1998 |
| Advanced Building Plastics Limited | Derby | 2018 |
| Advanced Cables PLC | London | 2020 |
| Advanced Car Tuning Trading AS Autohelp Ltd. | Birmingham | 2003 |
| Advanced Caravan Services Limited | Derby | 2013 |
| Advanced Carbide Tooling Limited | Leicestershire | 1984 |
| Advanced Carbon Allotropes Limited | Burton-On-Trent | 2017 |
| Advanced Cardio Equipment Limited | Reigate | 2010 |
| Advanced Carpentry & Property Solutions Ltd | Leicester | 2026 |
| Advanced Carpentry Limited | Leicester | 2015 |
| Advanced Catering Services Ltd | Lincoln | 2007 |
| Advanced Ceramic Engineering Ltd | Armagh | 2012 |
| Advanced Ceramics Limited | Stafford | 2001 |
| Advanced Chemical Etching Limited | Wolverhampton | 2000 |
| Advanced Chemical Holdings Ltd | Rossendale | 2018 |
| Advanced Chemical Specialties Limited | Yeovil | 1996 |
| Advanced Cleaning Systems Limited | Cardiff | 2013 |
| Advanced CNC Services Limited | Worcester | 2005 |
| Advanced Coated Products Limited | Cheltenham | 2015 |
| Advanced Coating (Services) Ltd | Leeds | 2009 |
| Advanced Coating Systems Limited | Newmarket | 2024 |
| Advanced Coilwinding Equipment Limited | London | 1993 |
| Advanced Coldformed Sections Ltd | Wolverhampton | 2009 |
| Advanced Colour Coatings Limited | Birmingham | 2004 |
| Advanced Colours and Chemicals Limited | Haslingden, Rossendale | 2011 |
| Advanced Colours and Plastics Ltd | Near Alsager | 2021 |
| Advanced Component Coating Solutions Ltd | Prescot | 2020 |
| Advanced Component Technology Limited | Silsden | 2009 |
| Advanced Composite Machining Limited | Stourbridge | 2014 |
| Advanced Composites Engineering Limited | Cramlington | 2020 |
| Advanced Comprehensive Engineering Services Limited | Oxford | 1999 |
| Advanced Compressor Solutions Limited | Newcastle Upon Tyne | 2015 |
| Advanced Construction Products Ltd | Liverpool | 2024 |
| Advanced Contracts (Midlands) Limited | Willenhall | 2001 |
| Advanced Control Services Limited | Walsall | 2010 |
| Advanced Cooling Systems Ltd | Newton Aycliffe | 2015 |
| Advanced Corp Ltd | Batley | 2019 |
| Advanced Couplings Limited | Keighley | 1988 |
| Advanced Covers Limited | Southampton | 2008 |
| Advanced Craft Joinery Limited | Nottingham | 2003 |
| Advanced Cryo Refrigeration Limited | Bedfordshire | 2003 |
| Advanced Custom Engineering Ltd | Newport | 2017 |
| Advanced Cutting Technology Limited | Maldon | 1996 |
| Advanced Dental Laboratories Ltd | Birmingham | 2016 |
| Advanced Dental Orthodontics Laboratories Ltd | Birmingham | 2018 |
| Advanced Dental Prosthetics Limited | Northampton | 2017 |
| Advanced Dental Services Ltd | Boldon Colliery | 2012 |
| Advanced Dental Whitening Supplies Limited | Birmingham | 2022 |
| Advanced Design & Display Limited | London | 2026 |
| Advanced Diagnostic Group Ltd | Nottingham | 2016 |
| Advanced Diamondx Ltd | Bristol | 2018 |
| Advanced Dishwasher Repairs Ltd | Ashton-Under-Lyne | 2017 |
| Advanced Dive Electronics Limited | Beaminster | 1998 |
| Advanced Domestic Appliances Limited | Glasgow | 2000 |
| Advanced Dyeing Solutions Limited | Batley | 2001 |
| Advanced Dyno Solutions Ltd | Dalgety Bay | 2022 |
| Advanced Elastomer Systems Unlimited | Newport | 1990 |
| Advanced Electrical Engineering Solutions Ltd | Enfield | 2022 |
| Advanced Electro-Mechanical Solutions Ltd | Northampton | 2007 |
| Advanced Electronic Designs Ltd | Horsham | 1998 |
| Advanced Electronic Solutions Ltd | | 2002 |
| Advanced Electronic Systems Limited | Llanelli | 2004 |
| Advanced Electronics & Logistics Limited | Gloucester | 2003 |
| Advanced Electronics Limited | Newcastle Upon Tyne | 1999 |