| 456fix Ltd | Builders | MK45 4HR | 2019 |
| 5 D Property Services Ltd | Builders | MK45 1HX | 2016 |
| A-Tech Building Services Ltd | Builders | MK45 4HS | 2014 |
| Abbey Preservation Co. Ltd | Builders | MK45 4DD | 1972 |
| Ace Builders (Flamstead) Ltd | Builders | MK45 4PP | 2010 |
| Allen Mezzanines Ltd | Builders | MK45 2NW | 2021 |
| Amp Solutions Ltd | Builders | MK45 3NT | 2017 |
| Anglo Carpentry Ltd | Builders | MK45 1LP | 2014 |
| Anoz Services Ltd | Builders | MK45 4PP | 2025 |
| Apex Plus Ltd | Builders | MK45 4HR | 2022 |
| Arlo Developments Ltd | Builders | MK45 3QX | 2018 |
| Ascent Property Services Ltd | Builders | MK45 1AH | 2011 |
| Ash Homes Development Herts Ltd | Builders | MK45 2BW | 2025 |
| Ashley Blind Contracts Ltd | Builders | MK45 5EU | 2021 |
| Ashvale Civil Engineering (Holdings) Ltd | Builders | MK45 5AH | 2014 |
| Ashvale Civil Engineering Ltd | Builders | MK45 5AH | 2003 |
| Aspect Construction & Carpentry Ltd | Builders | MK45 4PP | 2018 |
| Att Building Services Ltd | Builders | MK45 5JY | 2019 |
| Att Developments Ltd | Builders | MK45 5JY | 1998 |
| B & S Dry Lining Ltd | Builders | MK45 4SS | 1995 |
| B Wright Safety Solutions Ltd | Builders | MK45 2SE | 2025 |
| Ballagh Ltd | Builders | MK45 2BG | 2016 |
| Barnard Building and Plumbing Ltd | Builders | MK45 1EF | 2023 |
| Barton Hill Construction Ltd | Builders | MK45 4SG | 2025 |
| Bcw Builders Ltd | Builders | MK45 5AT | 2018 |
| Beckett Construction Ltd | Builders | MK45 4HR | 2021 |
| Bedfordshire Garden Buildings Ltd | Builders | MK45 5AT | 2021 |
| Belltwin Commercial Catering Engineers Ltd | Builders | MK45 1SH | 2018 |
| Bellwood Group Ltd | Builders | MK45 4RP | 2022 |
| Bellwood Holdings Ltd | Builders | MK45 4RP | 2018 |
| Bellwood Interiors Ltd | Builders | MK45 4RP | 2004 |
| Bes Geomatics Ltd | Builders | MK45 2NG | 2013 |
| Billington & Lawrence Ltd | Builders | MK45 4HS | 2003 |
| Black Panther (Investments) Ltd | Builders | MK45 5BL | 2014 |
| Blue Oak Interiors Ltd | Builders | MK45 1DX | 2020 |
| Brava Groundworks Ltd | Builders | MK45 4PU | 2026 |
| Brennan West Ltd | Builders | MK45 4HS | 2025 |
| Brim-Build Ltd | Builders | MK45 2RR | 2023 |
| Brookmead Plant Sales Ltd | Builders | MK45 4SG | 2006 |
| Brookmead Property Services Ltd | Builders | MK45 4SG | 2006 |
| Caruso Home Solutions Ltd | Builders | MK45 2NW | 2012 |
| Cawdell Connections Ltd | Builders | MK45 5EF | 2015 |
| Ceb Construction Ltd | Builders | MK45 4HS | 2017 |
| Celestial Wave Ltd | Builders | MK45 3AN | 2024 |
| Cell-Tech (St Albans) Ltd | Builders | MK45 1HG | 2013 |
| Chardy Ltd | Builders | MK45 1JN | 2015 |
| Charles Lewis Construction Ltd | Builders | MK45 4HR | 2020 |
| Coleman Ptl Ltd | Builders | MK45 5LW | 2022 |
| Commercial Interior Design Ltd | Builders | MK45 2TS | 2007 |
| Costa Contracts Ltd | Builders | MK45 3NY | 2023 |
| Cranfield Haulage Ltd | Builders | MK45 2SN | 2010 |
| Crowne Home Improvements Ltd | Builders | MK45 3SB | 2026 |
| Crw Construction Ltd | Builders | MK45 3NY | 2022 |
| Cssw.London Ltd | Builders | MK45 4HR | 2016 |
| D K P Developments Ltd | Builders | MK45 4HR | 2011 |
| Dance-Reeves Ltd | Builders | MK45 4RP | 2007 |
| Dci Partitions Ltd | Builders | MK45 4TB | 2003 |
| Design-Pile-Construct Ltd | Builders | MK45 1HX | 2022 |
| Dexterous Design and Build Ltd | Builders | MK45 4HR | 2023 |
| Diamond Investors Ltd | Builders | MK45 4SG | 2005 |
| Dimmock Construction Ltd | Builders | MK45 4HR | 1997 |
| Direct Mains Ltd | Builders | MK45 3SE | 2018 |
| Dna Construct Ltd | Builders | MK45 3GT | 2017 |
| Dnd Drylining Ltd | Builders | MK45 4JQ | 2023 |
| Dnp Lifts Ltd | Builders | MK45 4PP | 2025 |
| Driveway Rejuvenation Ltd | Builders | MK45 5AT | 2007 |
| Ds Pro Developments Ltd | Builders | MK45 2HL | 2009 |
| Easy Lay Landscaping Ltd | Builders | MK45 4HR | 2023 |
| Edward Consulting Services Ltd | Builders | MK45 2PJ | 2024 |
| Ella & White Ltd. | Builders | MK45 2NW | 1995 |
| Elmway Groundworks Ltd | Builders | MK45 4DD | 2008 |
| Emiland Ltd | Builders | MK45 3GT | 2022 |
| Energy Care Group Ltd | Builders | MK45 3PD | 2009 |
| Etec Lifts Ltd | Builders | MK45 4PP | 2018 |
| Evolution Floor Screed and Drylining Ltd | Builders | MK45 1EQ | 2018 |
| Extension Team Ltd | Builders | MK45 2LF | 2023 |
| Firthwells Brickwork Ltd | Builders | MK45 1JF | 2026 |
| Fitters To Site Ltd | Builders | MK45 2DT | 2023 |
| Fn Automated Door Systems Ltd | Builders | MK45 3LY | 2024 |
| Fp Mccafferty Ltd | Builders | MK45 2AX | 2022 |
| Fps Plumbing & Heating Ltd | Builders | MK45 5LH | 2009 |
| Frontline Property Solutions Ltd | Builders | MK45 4PP | 2023 |
| Gaughan Ltd | Builders | MK45 2PA | 2022 |
| Gill Hudson Homes (Rectory) Ltd | Builders | MK45 2NW | 2021 |
| Gill Hudson Homes Barford Ltd | Builders | MK45 2NW | 2021 |
| Gill Hudson Homes Clifton Ltd | Builders | MK45 2NW | 2020 |
| Gill-Hudson Homes Ltd | Builders | MK45 2NW | 2014 |
| Gj Poulett Services Ltd | Builders | MK45 1HU | 2026 |
| Gps New Homes Ltd | Builders | MK45 4PZ | 2018 |
| Graham Hall Building Services Ltd | Builders | MK45 2SA | 2017 |
| Greenhayes Contractors Ltd | Builders | MK45 2NW | 1997 |
| Habitat Landscapes Ltd | Builders | MK45 4AW | 2011 |
| Hammer Bricklaying Ltd | Builders | MK45 4BG | 1998 |
| Harley Specialised Construction Ltd | Builders | MK45 2NW | 2016 |
| Hms Contractors Ltd | Builders | MK45 4HR | 2021 |
| Hudson West Ltd | Builders | MK45 4HS | 2019 |
| Ifan Ltd | Builders | MK45 4DA | 2020 |
| Ikapoukis Ltd | Builders | MK45 1EL | 2017 |
| Impera Conservation Ltd | Builders | MK45 2NW | 2024 |
| Inspired Refits Ltd | Builders | MK45 4SF | 2024 |
| Ipk Ltd | Builders | MK45 3FB | 2025 |
| Isla Steel Ltd | Builders | MK45 2SU | 2025 |
| J & D 2012 Ltd | Builders | MK45 4PZ | 2012 |
| Jb Interiors Lut Ltd | Builders | MK45 4PP | 2020 |
| Jdr Renovations Ltd | Builders | MK45 1FH | 2023 |
| Jjl Plastering and Rendering Ltd | Builders | MK45 3EL | 2020 |
| Jlb Building Ltd | Builders | MK45 2RP | 2018 |
| Jumper Network Systems Ltd | Builders | MK45 1HZ | 2015 |
| Jw Construction Management Services Ltd | Builders | MK45 1SF | 2026 |
| Jwd Scott Ltd | Builders | MK45 2BA | 2025 |
| Jwl Enterprises (Dub) Ltd | Builders | MK45 2NW | 2015 |
| K2 Interiors (UK) Ltd | Builders | MK45 4NH | 2013 |
| Kendall Contracts Ltd | Builders | MK45 5BS | 1999 |
| Kingshall Estates UK Ltd | Builders | MK45 2BG | 2002 |
| L Moore Construction Ltd | Builders | MK45 1AP | 2016 |
| L.E.L. Bathrooms & Kitchens Ltd | Builders | MK45 2NW | 2018 |
| Landmark Playgrounds Ltd | Builders | MK45 4HS | 2023 |
| Libra Compact (UK) Ltd | Builders | MK45 4SG | 2001 |
| Liddle & Co Ltd | Builders | MK45 5BN | 2014 |
| Life Science Services Ltd | Builders | MK45 3NA | 2016 |
| Liv Drylining Ltd | Builders | MK45 1LT | 2024 |
| M C Thermal Insulations Ltd | Builders | MK45 2NW | 2006 |
| M Dumpleton Carpentry Ltd | Builders | MK45 4RS | 2016 |
| M O'Leary & Sons Construction Ltd | Builders | MK45 2NW | 2005 |
| M&M Building & Plastering Ltd | Builders | MK45 3EJ | 2020 |
| M.G. Mccaffrey Ltd | Builders | MK45 4RP | 1976 |
| Maple Plastering Ltd | Builders | MK45 1GP | 2015 |
| Mark Early Build Ltd | Builders | MK45 4ES | 2018 |
| Maytree Surveying and Engineering Ltd | Builders | MK45 4HR | 2020 |
| Mccarthy-Gardner Enterprises Ltd | Builders | MK45 4BQ | 2025 |
| Mcdaid Screeding Services Ltd | Builders | MK45 4HR | 2001 |
| Mcgoldrick Construction Ltd | Builders | MK45 4NZ | 2024 |
| Mds Plant Ltd | Builders | MK45 4HR | 2020 |
| Mg Project Management Ltd | Builders | MK45 2NW | 2001 |
| Mileacre Ltd | Builders | MK45 5HG | 2009 |
| Montague Reinstatement Ltd | Builders | MK45 4QL | 2018 |
| Morris and Saunders Ltd | Builders | MK45 4HR | 2021 |
| Mr Property Maintenance Ltd | Builders | MK45 4PP | 2012 |
| Nicholas Lowe Construction Ltd | Builders | MK45 2NW | 2015 |
| North Hertfordshire Building Company Ltd | Builders | MK45 5AT | 2007 |
| Ns Brickwork Ltd | Builders | MK45 1DY | 2015 |
| Oakridge New Homes Ltd | Builders | MK45 4PZ | 2018 |
| Ohanapropertysolutions Ltd | Builders | MK45 3PA | 2025 |
| Oliver Door Company Ltd | Builders | MK45 2NW | 2003 |
| On-Line Roadmarking Ltd | Builders | MK45 1JG | 2015 |
| Orchard Blinds & Shutters Ltd | Builders | MK45 5BB | 2022 |
| P and I Milligan Ltd | Builders | MK45 1BD | 2024 |
| Parker’S Landscaping Group Ltd | Builders | MK45 4PP | 2022 |
| Perfect Fit Installations Ltd | Builders | MK45 2NW | 2012 |
| Pinnacle Design Ltd | Builders | MK45 2NW | 2017 |