| A & R Blinds Ltd | Builders | CO7 9DP | 2025 |
| A.G. Tremain Ltd | Builders | CO7 7QR | 1972 |
| A1 Fitters Ltd | Builders | IP7 5EL | 2016 |
| Academy Building Contracts Ltd | Builders | IP7 5EA | 2005 |
| Ace Pave and Groundworks Ltd | Builders | CO7 0RN | 2011 |
| Advocate Ag Ltd | Builders | CO7 7NG | 2002 |
| Affordable Renewable Energy UK Ltd | Builders | CO7 7FG | 2023 |
| Alaska Developments Ltd | Builders | IP7 7DN | 2016 |
| Alexander James Developments Ltd | Builders | CO7 8QN | 2024 |
| Allbuild Suffolk Ltd | Builders | IP7 6RD | 2024 |
| Allston and Jones Building Ltd | Builders | CO7 7BY | 2022 |
| Amosp Solutions Ltd | Builders | CO7 9QZ | 2026 |
| Apw Tm Solutions Ltd | Builders | CO7 7FD | 2016 |
| Ardent Lift Consultancy Ltd. | Builders | IP7 6RD | 2012 |
| Aspire Property Solutions Ltd | Builders | CO7 8PN | 2006 |
| Axis Commercial Interiors Ltd | Builders | IP7 6RD | 2026 |
| Aylott Construction Services Ltd | Builders | CO7 7GB | 2010 |
| B. Casey Builders Ltd. | Builders | IP7 6RD | 2002 |
| Bakers Lofts Ltd | Builders | CO7 7BY | 2018 |
| Bardol Construction Ltd | Builders | CO7 7GE | 2019 |
| Bb Cabling Ltd | Builders | CO7 7BY | 2024 |
| Beale'S Property Maintenance Ltd | Builders | CO7 8PB | 2003 |
| Ben Wood Contracts Ltd | Builders | CO7 9AF | 2023 |
| Benjamin T Sands Carpenters and Builders Ltd | Builders | CO7 7FX | 2010 |
| Bidgood Consultancy Ltd | Builders | CO7 8PS | 2026 |
| Bk Building Contractors Ltd | Builders | CO7 0FH | 2022 |
| Bloome Construction Ltd | Builders | IP7 6RD | 2016 |
| Blowers Homes Ltd | Builders | CO7 7FX | 2013 |
| Brett Valley Builders Ltd | Builders | IP7 7LZ | 2013 |
| Britau Ltd | Builders | CO7 0EH | 2008 |
| Browns Building Developers Ltd | Builders | CO7 7UL | 2025 |
| Browns Construction & Groundworks Ltd | Builders | CO7 7UL | 2024 |
| Browns Ptp Ltd | Builders | IP7 6RD | 2026 |
| Bruce B Ltd | Builders | CO7 7EA | 2006 |
| Buxton Flow Screeds Ltd | Builders | CO7 7FD | 2018 |
| Byers Cabling Solutions Ltd | Builders | CO7 7BY | 2025 |
| C & K Developments Ltd | Builders | CO7 9LB | 2002 |
| C&K (Contracts) Ltd | Builders | CO7 9LB | 2015 |
| Capital Screeding Ltd | Builders | CO7 7FD | 2022 |
| Catt Projects Ltd | Builders | IP7 6RH | 2022 |
| Cc Construction & Groundworks Ltd | Builders | CO7 0JZ | 2012 |
| Cdm Insulations Ltd | Builders | CO7 7BY | 2007 |
| Chelsworth Ltd | Builders | IP7 7HT | 2002 |
| Clarkes 24/7 Ltd | Builders | IP7 5EA | 2014 |
| Clermont Place Management Company Ltd. | Builders | CO7 0FH | 2015 |
| Co Brickwork Ltd | Builders | CO7 0JD | 2026 |
| Colchesterbrickwork Ltd | Builders | CO7 0LL | 2026 |
| Collison Brickwork Ltd | Builders | CO7 7BY | 2014 |
| Colne Contracts Ltd | Builders | IP7 6RD | 2007 |
| Colne Valley Building Services Ltd | Builders | CO7 7PS | 2005 |
| Coram Property Services Ltd | Builders | CO7 7BY | 2011 |
| Coreline Interiors Ltd | Builders | CO7 7FD | 2024 |
| Cornerstone Exterior Services Ltd | Builders | CO7 9SQ | 2026 |
| Cornhill Property Services (East Anglia) Ltd | Builders | CO7 7BY | 2020 |
| Coverdale Specialist Flooring Ltd | Builders | CO7 9HG | 2020 |
| Cranmer & Holdstock Contracts Ltd | Builders | CO7 7FX | 2005 |
| Cre 8 Tive Construction Ltd | Builders | CO7 7QR | 2008 |
| Darren Tucker Insulation Ltd | Builders | CO7 7FX | 2003 |
| Daybar Ltd | Builders | CO7 7EA | 2021 |
| Dbf Builders UK Ltd | Builders | IP7 6RD | 2016 |
| Dbl Contracts Ltd | Builders | CO7 8AF | 2016 |
| Dean Banyard Ltd | Builders | IP7 5HZ | 2008 |
| Don'T Take A Fence Ltd | Builders | CO7 7EA | 2023 |
| E.L Walker Construction Ltd | Builders | IP7 6RD | 2024 |
| Eastern Sports Surfaces Ltd | Builders | CO7 9LA | 2016 |
| Elderbrook Homes Ltd | Builders | CO7 7FD | 2023 |
| Electrical Solutions Es Ltd | Builders | IP7 7NE | 2011 |
| Elm Construction Ltd | Builders | IP7 6RD | 2017 |
| Essex and Suffolk Building Solutions Ltd | Builders | CO7 0NA | 2026 |
| Essex Development Company (Anglia) Ltd | Builders | CO7 7SD | 1997 |
| Estuary Ec Contracts Ltd | Builders | CO7 9NW | 2022 |
| Ewart (Special Works) Ltd | Builders | IP7 5EA | 2001 |
| Exterior Improvements Ltd | Builders | CO7 8LS | 2017 |
| Ferrer Dewatering UK Ltd | Builders | CO7 7QR | 2020 |
| Francis Access Hire Ltd | Builders | CO7 8LG | 2017 |
| Frinton Tarmacadam and Paving Ltd | Builders | CO7 6ET | 1997 |
| Fv Conservatories & Windows Ltd | Builders | CO7 7EA | 2006 |
| G & K Scaffolding & Roofing Ltd | Builders | CO7 8JL | 2011 |
| G & T East Anglia Ltd | Builders | IP7 6RL | 2012 |
| G Lattimore Home Improvements Ltd | Builders | CO7 7BY | 2026 |
| Gary Jobber Woodworking & Construction Ltd | Builders | CO7 9AH | 2013 |
| Gmp Projects Ltd | Builders | CO7 7LT | 2020 |
| Goodwin & Gould Ltd | Builders | CO7 0NL | 2011 |
| Griggs Builders Ltd | Builders | CO7 0PL | 2017 |
| Gvz Glasshouses Ltd | Builders | CO7 7LT | 2010 |
| Hall Brothers of Colchester Ltd | Builders | CO7 6TU | 1966 |
| Handley Installations Ltd | Builders | CO7 7TL | 2017 |
| Harding Project Solutions Ltd | Builders | CO7 7BY | 2013 |
| Harris Building Co. Ltd | Builders | CO7 7QR | 2013 |
| Hasler Hawkins Engineering Services Ltd | Builders | IP7 6RD | 1978 |
| Hawkins Brickwork Services Ltd | Builders | IP7 6RD | 2022 |
| Hawksmoor Construction Services Ltd | Builders | CO7 7FX | 2007 |
| Hc Paving Ltd | Builders | CO7 7FX | 2016 |
| Henry Ashe Projects Ltd. | Builders | CO7 7FX | 2002 |
| Henry Hall Build Ltd | Builders | CO7 7BY | 2017 |
| Hg Trade Ltd | Builders | IP7 6RL | 2012 |
| Highfields Steel Construction Ltd | Builders | IP7 6RD | 2016 |
| Hill Piling Ltd | Builders | CO7 7BY | 1996 |
| Holmes Groundwork and Construction Ltd | Builders | CO7 9QE | 2021 |
| Homereno UK Ltd | Builders | CO7 7EA | 2025 |
| Hori Ltd | Builders | IP7 6RD | 2026 |
| Housevale Ltd | Builders | CO7 0JX | 2026 |
| Hurd Carpentry & Building Ltd | Builders | IP7 6PP | 2021 |
| Ideal Carpentry Ltd | Builders | CO7 7EA | 2015 |
| Idmc Ltd | Builders | CO7 7FX | 2019 |
| Imperial Homes Group (Essex) Ltd | Builders | CO7 7FD | 2020 |
| Industrial Doors East Anglia Ltd | Builders | CO7 7WX | 2025 |
| Inov8 Holdings Ltd | Builders | IP7 6RD | 2022 |
| Ipswich Plant Services Ltd | Builders | IP7 6RD | 2015 |
| J & P Contracts Ltd | Builders | IP7 6LD | 2013 |
| Jarvis Building Contractors Ltd | Builders | IP7 6RD | 2021 |
| Jcma Ltd | Builders | IP7 7NN | 2021 |
| Jh Carpentry & Building (Ea) Ltd | Builders | IP7 6RD | 2023 |
| Jm Construction and Building Ltd | Builders | CO7 7FD | 2022 |
| Jovis Ltd | Builders | CO7 9JD | 2004 |
| Jps Building Developments Ltd | Builders | CO7 7BY | 2024 |
| K & A Builders Ltd | Builders | IP7 6RD | 2001 |
| K and J Construction Ltd | Builders | CO7 8SH | 2019 |
| K and J Fabrication Ltd | Builders | CO7 8SH | 2022 |
| K D Roofing & Cladding Ltd | Builders | CO7 9ES | 2020 |
| K.E.J Services Ltd | Builders | CO7 0LJ | 2025 |
| K.W.T. Services Ltd. | Builders | CO7 7FX | 2003 |
| Kane Walker Ltd | Builders | CO7 6SR | 2014 |
| Keystone Fire Solutions Ltd | Builders | IP7 5SE | 2026 |
| Keystone Property London Ltd | Builders | CO7 7FD | 2023 |
| Kitchens For Living Ltd | Builders | IP7 6RD | 2018 |
| Krantz Ltd | Builders | CO7 7WX | 2017 |
| Kyle Building Solutions Ltd | Builders | CO7 7BY | 2022 |
| L&S Contracts Ltd | Builders | CO7 0DL | 2023 |
| Lbc Drylining Ltd | Builders | CO7 7FX | 2022 |
| Letts Swimming Pools Ltd | Builders | IP7 6HP | 1979 |
| Lining Systems Grp Ltd | Builders | CO7 7EA | 2015 |
| Lydia Home & Gardens Ltd | Builders | CO7 9NE | 2026 |
| Lynton Build Ltd | Builders | CO7 7QR | 2018 |
| M & A Property Developments Ltd | Builders | IP7 6RD | 2017 |
| Magian Ltd | Builders | IP7 7HW | 2007 |
| Mark Bridges Carvers & Gilders Ltd | Builders | IP7 6RD | 2003 |
| Martin & Black Ltd | Builders | IP7 7EE | 2020 |
| Mba Flue Services Ltd | Builders | IP7 5SQ | 2008 |
| Mccartney Brickwork (Dedham) Ltd | Builders | CO7 6EU | 2017 |
| Meadowsway Hadleigh Ltd | Builders | IP7 6DP | 2024 |
| Mervyn Lambert Plant Ltd | Builders | IP7 5EA | 1987 |
| Michael Martin Property Ltd | Builders | IP7 6RD | 2018 |
| Mitchell'S Interiors Ltd | Builders | CO7 8DZ | 2023 |
| Modern Glaze Ltd | Builders | IP7 5ES | 2024 |
| Morlan Building Contractors Ltd | Builders | CO7 8SH | 2019 |
| Mould Zero Ltd | Builders | IP7 6DD | 2025 |
| Msj Group Ltd | Builders | IP7 5EL | 2020 |
| My Green Energy Group Ltd | Builders | IP7 5EA | 2024 |
| Navarre London Ltd | Builders | CO7 7QR | 2017 |