| Advanced Fire & Security South West Limited | Redruth | 2018 |
| Advanced Fire Alarms Ltd | Manchester | 2010 |
| Advanced Fire Detection Ltd | Ferndown | 2026 |
| Advanced Fire Engineering Ltd | Hove | 2007 |
| Advanced Fire Protect Limited | London | 2022 |
| Advanced Fire Security Limited | Bristol | 2010 |
| Advanced Fire Stopping Ltd | Warrington | 2022 |
| Advanced Fire Systems Limited | Bristol | 2003 |
| Advanced Flooring Solutions Limited | Wolverhampton | 2011 |
| Advanced Flooring Systems Ltd | Armagh | 2021 |
| Advanced Floors Limited | Sunderland | 2022 |
| Advanced Foam Removal Ltd | London | 2025 |
| Advanced Foundation Technology Limited | Glossop | 2011 |
| Advanced GAS & Heating Solutions Ltd | Birmingham | 2015 |
| Advanced GAS & Plumbing Solutions Limited | Ulverston | 2019 |
| Advanced GAS and Heating Limited | Sale | 2009 |
| Advanced GAS and Plumbing Limited | Goxhill | 2016 |
| Advanced GAS Care Ltd | London | 2011 |
| Advanced GAS Heating Limited | Birmingham | 2018 |
| Advanced GAS Ltd | Erith | 2010 |
| Advanced GAS Services (East Yorkshire) Limited | Hull | 2001 |
| Advanced GAS Services (Midlands) Limited | Derbyshire | 2004 |
| Advanced GAS SOL Limited | Sutton | 2026 |
| Advanced GAS Solutions Ltd | Rugby | 2022 |
| Advanced GAS Utilities Ltd | Hayes | 2021 |
| Advanced GAS Yorkshire Limited | Halifax | 2013 |
| Advanced GAS, Heating & Plumbing Ltd | Folkestone | 2017 |
| Advanced Glass & Glazing Limited | Bristol | 2003 |
| Advanced Glass Limited | Sutton Coldfield | 2011 |
| Advanced Glazing Installations Limited | Cannock | 2021 |
| Advanced Glazing Solutions Limited | Sheffield | 2014 |
| Advanced Global Ltd | Burnley | 2014 |
| Advanced Green Solutions Limited | Manchester | 2011 |
| Advanced Groundwork Specialist Ltd. | Broadstairs | 2005 |
| Advanced Groundwork Supplies Limited | Warrington | 1988 |
| Advanced Groundworks and Developments Limited | Stockport | 1999 |
| Advanced Group PM Ltd | Stevenage | 2022 |
| Advanced Guttering Ltd | Colne | 2023 |
| Advanced Habitats Limited | Hull | 2019 |
| Advanced Heat Limited | Corby | 2020 |
| Advanced Heat Management Solutions Ltd | Leeds | 2022 |
| Advanced Heat Solutions Limited | Shifnal | 2015 |
| Advanced Heating & GAS Ltd | London | 2021 |
| Advanced Heating & Plumbing Limited | Watford | 1999 |
| Advanced Heating & Plumbing Services Limited | Redditch | 2003 |
| Advanced Heating and Cooling Limited | Peterborough | 2003 |
| Advanced Heating and Plumbing Technical Services Ltd | Liverpool | 2015 |
| Advanced Heating Group NW Ltd | Liverpool | 2021 |
| Advanced Heating Limited | Waltham Abbey | 2021 |
| Advanced Heating Solutions Ltd | Harrow | 2022 |
| Advanced Heating Technologies Ltd | Leicester | 2021 |
| Advanced Heating,Plumbing & Electrical Solutions Ltd | Nantwich | 2011 |
| Advanced Heritage Roofing Limited | Bolton | 2015 |
| Advanced Holdings (Lincoln) Limited | Lincoln | 2021 |
| Advanced Home Improvements S E Ltd | Rochester | 2025 |
| Advanced Home Improvements UK Ltd | Chesterfield | 2020 |
| Advanced Home Solutions Ltd | Sutton | 2025 |
| Advanced Homes Limited | Leeds | 1982 |
| Advanced Housing & Utility Services Ltd | Middlesbrough | 2024 |
| Advanced Housing Systems Limited | Kingsbridge | 2008 |
| Advanced Hygienic Contracting Limited | Harrogate | 1995 |
| Advanced Improvements Ltd | London | 2021 |
| Advanced Industrial Coatings Ltd | Middlesbrough | 2022 |
| Advanced Industrial Roofing and Cladding Solutions Limited | Chelmsford | 2012 |
| Advanced Info & Tech Solutions Ltd | Port Talbot | 2022 |
| Advanced Infrastructure Systems Limited | Telford | 2007 |
| Advanced Inspection Access Ltd | Fochabers | 2019 |
| Advanced Inspections Limited | Darlington | 2016 |
| Advanced Install Ltd | London | 2022 |
| Advanced Installation Projects Ltd | Oldham | 2021 |
| Advanced Installation Services Ltd | Chandler'S Ford | 2016 |
| Advanced Installations (S E) Limited | London | 2014 |
| Advanced Installations West Wales Ltd | Laugharne | 2019 |
| Advanced Insulation Solutions Ltd | Liverpool | 2019 |
| Advanced Integrated Services Limited | Ormskirk | 2018 |
| Advanced Integrated Solutions Ltd | Ayr | 2010 |
| Advanced Integrated Systems Ltd | Bristol | 2004 |
| Advanced Interior Finishing Limited | Leyland | 2012 |
| Advanced Interior Solutions (Projects) Limited | London | 2014 |
| Advanced Interior Solutions Limited | London | 1979 |
| Advanced Interior Systems Limited | Southport | 1981 |
| Advanced Interior Systems NW Ltd | Southport | 2015 |
| Advanced Interiors Ltd | Preston | 2020 |
| Advanced Interiors Midlands Ltd | Syston, | 2012 |
| Advanced Internals Ltd | Droitwich | 2021 |
| Advanced Invasives Ltd | Cardiff | 2016 |
| Advanced Investigation Systems Limited | Dorchester | 2006 |
| Advanced Joinery (East) Limited | Norwich | 2014 |
| Advanced Land & Development Design Ltd | Wigan | 2017 |
| Advanced LDN Services Limited | London | 2012 |
| Advanced Lifting & Rigging Solutions Ltd | Carrickfergus | 2018 |
| Advanced Lifting Limited | Great Yarmouth | 2022 |
| Advanced Lifts (U.K) Ltd | Barrow-Upon-Humber | 2025 |
| Advanced Lifts Ltd | Oldham | 2018 |
| Advanced Lighting Technology Limited | Washington | 2020 |
| Advanced Loft Ladders Ltd | Towcester | 2013 |
| Advanced Ltd | London | 2023 |
| Advanced M&E Systems UK Ltd | Fitzrovia | 2026 |
| Advanced Maintenance London Ltd | London | 2021 |
| Advanced Maintenance SH Limited | London | 2024 |