| 01 Handyman Ltd | Joiners & carpenters | NN10 6UL | 2015 |
| 5 Star Barber I Ltd | Hair & beauty | NN10 0QE | 2023 |
| A A Buckingham Ltd | Builders | NN10 0NG | 2011 |
| A B Electrics (UK) Ltd | Electricians | NN10 0GL | 2002 |
| A Bit of Green Ltd | Gardeners & landscapers | NN9 5YG | 2007 |
| A Jutzeler (U.K.) Ltd | Joiners & carpenters | NN10 8DL | 1987 |
| A&A Building Solutions Ltd | Builders | NN10 0EA | 2019 |
| A&D Chassis and Fabrications Ltd | Builders | NN9 5QJ | 2026 |
| A&H Barbers Ltd | Hair & beauty | NN9 5LG | 2025 |
| A&M Building Ltd | Builders | NN10 0TB | 2026 |
| A&O Building Ltd | Builders | NN10 9JE | 2024 |
| A. G. Pentelow Groundworks Ltd | Builders | NN10 0RA | 2011 |
| A. Seaton Electrical Ltd | Electricians | NN10 0GL | 2011 |
| A.A.A Constraction Ltd | Builders | NN10 6BY | 2022 |
| A.C. Autos - Remapping, Services and Repairs Ltd | Garages & mechanics | NN10 0AG | 2021 |
| Aarcon Ltd | Builders | NN10 9HP | 2025 |
| Aas Advanced Aerial Services Ltd | Electricians | NN10 9LA | 2017 |
| Abbey Plumbing & Electric Ltd | Plumbing & heating | NN10 0GL | 2019 |
| Abrams Building and Carpentry Ltd | Builders | NN9 6FS | 2017 |
| Ac Electrical Contracting Ltd | Electricians | NN10 0UY | 2021 |
| Ace Dry Lining (Northants) Ltd | Builders | NN9 5NY | 2016 |
| Acorn Lofts.Com Ltd | Builders | NN10 0RA | 2010 |
| Adelina2001 Ltd | Builders | NN10 9TL | 2018 |
| Adlss Ltd | Builders | NN10 0DT | 2017 |
| Adtf Ltd | Builders | NN10 0PR | 2025 |
| Aeriva Ltd | Builders | NN10 0UT | 2025 |
| Ah Multitrade Ltd | Builders | NN10 9QP | 2025 |
| Aiden James Motor Service Ltd | Garages & mechanics | NN10 6UU | 2019 |
| Air Con First Ltd | Plumbing & heating | NN9 6NB | 2023 |
| Aiso Consulting Ltd | Builders | NN10 0RA | 2012 |
| Ak Fade Nn9 Ltd | Hair & beauty | NN9 5PX | 2025 |
| Aks Brickwork Ltd | Builders | NN10 0RX | 2014 |
| Akusa Ltd | Cleaners | NN9 5GW | 2026 |
| Alan & Gary Services Ltd | Builders | NN9 5NQ | 2015 |
| Alchemy Business Services Ltd | Builders | NN10 0RA | 1998 |
| Alex Repair Ltd | Builders | NN10 9BX | 2018 |
| Alexander Building and Consulting Ltd | Builders | NN9 5BA | 2014 |
| Alhen Pro-Services Ltd | Builders | NN10 0QU | 2025 |
| Alliance Heat Ltd | Plumbing & heating | NN10 9TB | 2017 |
| Alpha Carpet & Flooring Ltd | Builders | NN9 6JE | 2005 |
| Alpine Interiors Ltd | Builders | NN10 8EF | 2023 |
| Alvex Ltd | Joiners & carpenters | NN10 8ND | 2025 |
| Amba Installations Ltd | Joiners & carpenters | NN10 8NP | 2015 |
| Ambient Plumbing & Heating Solutions Ltd | Plumbing & heating | NN10 8BW | 2025 |
| Amelie Atelier Aesthetics Ltd | Hair & beauty | NN9 5TY | 2026 |
| Andrew Rawlings Building Ltd | Builders | NN10 0RA | 2022 |
| Aphex Properties ( Projects ) Ltd | Builders | NN10 8BQ | 2024 |
| Apm Electrical and Mechanical Ltd | Electricians | NN10 6AT | 2026 |
| Applied Flooring Ltd | Builders | NN10 8BW | 2018 |
| Applied Resins Ltd | Builders | NN10 8BW | 2011 |
| Aqua Pro Maintenance Ltd | Plumbing & heating | NN10 9EL | 2026 |
| Ardit Building Ltd | Builders | NN10 0LU | 2022 |
| Artificial Lawns & Landscaping (Northants) Ltd | Gardeners & landscapers | NN10 6UB | 2024 |
| Arvion Building Management Ltd | Electricians | NN10 0PP | 2026 |
| Ash Services Gb Ltd | Builders | NN9 5RF | 2007 |
| Atl Windows & Home Improvements Ltd | Builders | NN9 6SZ | 2013 |
| Ato Training Ltd | Builders | NN9 6GR | 2020 |
| Auto Pro Locks Ltd | Garages & mechanics | NN10 8EH | 2016 |
| Autocentre (Rushden) Ltd | Garages & mechanics | NN10 0AG | 2005 |
| Avardi Ltd | Builders | NN10 6DJ | 2020 |
| B B Canopies Ltd | Builders | NN10 6UF | 2016 |
| B W Commercials Ltd | Garages & mechanics | NN10 8HJ | 2007 |
| B&R Electrical Team Ltd | Electricians | NN10 9YT | 2019 |
| B.M.W. (Home Improvements) Ltd | Builders | NN10 8ED | 1986 |
| Balauta Ltd | Garages & mechanics | NN10 0EF | 2015 |
| Barber 27 Ltd | Hair & beauty | NN10 0NZ | 2024 |
| Barber At Irthlingdorough Ltd | Hair & beauty | NN9 5TN | 2025 |
| Barn Construction Ltd | Builders | NN9 6GR | 2001 |
| Barnard Roofing Ltd | Roofers | NN10 6BB | 2009 |
| Barry Millers Ltd | Hair & beauty | NN10 0QX | 2013 |
| Baxter Developments (Bedford) Ltd | Builders | NN10 8BW | 2002 |
| Bbwg Services Ltd | Builders | NN9 6JF | 2025 |
| Bear Electrical Contract Solutions Ltd | Electricians | NN10 0UE | 2016 |
| Bedford Flow Co Ltd | Plumbing & heating | NN10 8DH | 2026 |
| Bee Cool Acs Ltd | Garages & mechanics | NN10 9TB | 2020 |
| Belloh'S Electrical Services Ltd | Electricians | NN10 0AP | 2023 |
| Berry Green Joinery Ltd | Joiners & carpenters | NN9 5JG | 2017 |
| Bg Contracting Services Ltd | Builders | NN9 5RS | 2008 |
| Bhavna Beauty Ltd | Hair & beauty | NN10 9YT | 2024 |
| Bho Betterhomeoutlook Ltd | Builders | NN10 0QU | 2020 |
| Big Red Roofing Ltd | Roofers | NN10 6BP | 2026 |
| Bitan Cleaning Services Ltd | Cleaners | NN10 6EY | 2025 |
| Blenheim Developments Ltd | Builders | NN9 5EP | 2012 |
| Bob Electrical Ltd | Electricians | NN10 9JD | 2022 |
| Bound and Bounce Home Improvements Ltd | Builders | NN10 8DZ | 2017 |
| Bound and Bounce Resin Surfaces Ltd | Builders | NN10 8DZ | 2019 |
| Brad Dell Electrical Services Ltd | Electricians | NN10 0DJ | 2023 |
| Brett Jarvis Plastering Ltd | Plasterers | NN10 8NN | 2024 |
| Brit Building Ltd | Builders | NN10 6AQ | 2026 |
| Brooks Event Services Ltd | Builders | NN10 0RA | 2020 |
| Btn Automotive Ltd | Garages & mechanics | NN9 5NY | 2021 |
| Byrnes Mot and Repair Centre Ltd | Garages & mechanics | NN9 6HY | 2020 |
| C & M Boardman Ltd | Plumbing & heating | NN10 8DZ | 2018 |
| Caretaker & Sons Ltd | Roofers | NN9 5NY | 2024 |
| Carrington Motors Ltd | Garages & mechanics | NN10 8HL | 2026 |
| Cc Facades & Cladding Ltd | Builders | NN10 8NQ | 2026 |
| Cento Engineering Company Ltd | Builders | NN10 6BW | 1995 |
| Cento Engineering Group Ltd | Builders | NN10 6BW | 2014 |
| Cento Maintenance Ltd | Builders | NN10 6BW | 2014 |
| Central Garage (Raunds) Ltd | Garages & mechanics | NN9 6JE | 1978 |
| Chadbon Brickwork Ltd | Builders | NN10 9HP | 2005 |
| Chapelfield Construction Ltd | Joiners & carpenters | NN10 8DD | 2022 |
| Charlie'S Construction Ltd | Builders | NN10 9LR | 2014 |
| Cheeky Monkey Salon Group Ltd | Hair & beauty | NN10 0DJ | 2018 |
| Chris Building Services Bathroom Renovation Ltd | Builders | NN10 8ED | 2023 |
| Chris Building Services Home Renovation Ltd | Builders | NN10 8ED | 2020 |
| Cj Carpet & Windows Ltd | Joiners & carpenters | NN10 0BD | 2022 |
| Clarendon Building (Midlands) Ltd | Builders | NN9 5JA | 2010 |
| Classic Conservatories (Earls Barton) Ltd | Builders | NN10 9TB | 2002 |
| Clean Smart Solutions Ltd | Cleaners | NN10 9TB | 2017 |
| Cleanflexi Ltd | Cleaners | NN10 0JA | 2025 |
| Clima Renewables Ltd | Plumbing & heating | NN9 6SZ | 2024 |
| Cls Electrical Services Ltd | Electricians | NN10 0RA | 2020 |
| Coiled Blue Ltd | Builders | NN10 8BQ | 2015 |
| Colman Floors Ltd | Flooring & tiling | NN9 5BJ | 2002 |
| Combine Technologies Ltd | Builders | NN9 5PB | 2022 |
| Commerce Windows Ltd | Builders | NN10 0RL | 2003 |
| Compass Construction Projects Ltd | Builders | NN10 6UH | 2024 |
| Consbud Ltd | Builders | NN10 0QU | 2025 |
| Cornerstone 2 Homes Ltd | Builders | NN10 8BW | 2018 |
| Cornerstone 2 Ltd | Builders | NN10 8BW | 2013 |
| Cornerstone Build and Developments Ltd | Builders | NN10 8HZ | 2026 |
| Cottee Cars Ltd | Garages & mechanics | NN9 5HX | 2013 |
| County Fire Services Ltd | Electricians | NN10 9SX | 2008 |
| County Hvacr Services Ltd | Plumbing & heating | NN9 5XG | 2024 |
| County Power Ltd | Electricians | NN10 6UT | 2006 |
| Cpi Data Ltd | Electricians | NN10 0RA | 2025 |
| Craft & Trowel Brickwork Ltd | Builders | NN10 6EY | 2026 |
| Craig Mandley Services Ltd | Cleaners | NN9 5RG | 2022 |
| Cranford Ironstone Company Ltd | Builders | NN10 0RA | 2025 |
| Crown Rooms Ltd | Builders | NN10 8AB | 2022 |
| Cruse & Holmes Ltd | Builders | NN9 5TY | 2015 |
| Cubex Contracts Ltd | Builders | NN9 6NS | 2003 |
| Curran Heating Ltd | Plumbing & heating | NN10 0YU | 2019 |
| D C Heating (UK) Ltd | Plumbing & heating | NN10 8BW | 2003 |
| D Joyce and Sons Ltd | Garages & mechanics | NN10 9YE | 1996 |
| D S W Developments Ltd | Builders | NN9 6LS | 2017 |
| D&L Electrical & Fire Protection Ltd | Electricians | NN10 8PN | 2016 |
| D-Line Roofing Ltd | Roofers | NN10 9TB | 2021 |
| D. N. Electrical Ltd | Electricians | NN10 8BW | 2016 |
| D.R.W. & Sons Ltd | Garages & mechanics | NN10 6FX | 2008 |
| D.W.S. Construction (2005) Ltd | Joiners & carpenters | NN9 5BE | 2005 |
| Da Efficient Gas Services Ltd | Plumbing & heating | NN9 5EJ | 2003 |
| Danavic Construction Ltd | Builders | NN10 9EW | 2021 |
| Daniel Hewitt Bathroom & Plumbing Services Ltd | Plumbing & heating | NN10 8BQ | 2023 |
| Darien Property Services Ltd | Builders | NN10 0DJ | 2018 |
| Dariens Property Maintenance Ltd | Builders | NN10 0DJ | 2022 |
| Darren Lucas Plastering Ltd. | Plasterers | NN10 0GL | 2005 |
| Davelyn Construction Ltd | Builders | NN10 8BS | 2024 |
| David Whiting Solutions Ltd | Plumbing & heating | NN10 6BP | 2014 |