| Jtsj Developments Ltd | Construction | 2020 |
| Jubian Care Limited | Other services | 2025 |
| JUD PAY Ltd | Construction | 2019 |
| Jude and Sons Limited | Construction | 2023 |
| Judith Nelson Consulting Limited | Administrative & support | 2016 |
| Juju's Boutique Ltd | Wholesale & retail | 2024 |
| Juke Investments Ltd | Real estate | 2018 |
| Jukebox (Bedford) Limited | Hospitality | 2020 |
| Jukebox MK Ltd | Arts & recreation | 2023 |
| Julie Holl Wellbeing Ltd | Arts & recreation | 2018 |
| Julie Speed Financial Planning Ltd | Financial services | 2026 |
| Julius a Meller Management Services Limited | Professional & scientific | 1990 |
| Jump City Ltd | Arts & recreation | 2018 |
| Jump Into Swimming Holdings Ltd | Education | 2026 |
| Jump Into Swimming Ltd | Arts & recreation | 2013 |
| Jumpbounce Ltd | Arts & recreation | 2025 |
| Junicorn Limited | Wholesale & retail | 2022 |
| Junior Plant Sales Limited | Wholesale & retail | 2000 |
| Junior Senior's Limited | Real estate | 2023 |
| Juniors Autos Ltd | Wholesale & retail | 2021 |
| Juniper Carpentry Limited | Construction | 2020 |
| Junky Dog Ltd | Hospitality | 2024 |
| Jupiter Financial Services Limited | Other services | 2017 |
| Jupiter Renewables Limited | Construction | 2016 |
| Just Baked and the Little Brownie Company Ltd | Manufacturing | 2025 |
| Just Baked With the Little Brownie Company Ltd | Hospitality | 2025 |
| Just Copiers Limited | Administrative & support | 2013 |
| Just Like New Limited | Other services | 2000 |
| Just Service Bedford Limited | Wholesale & retail | 2023 |
| Justin Alexander UK Limited | Administrative & support | 2023 |
| Justin's Autos Ltd | Wholesale & retail | 2025 |
| Justlikenew.Co.Uk Limited | Other services | 2000 |
| Justlikenew.Com Limited | Other services | 2000 |
| Jusz Limited | Administrative & support | 2015 |
| Juwi Investments Ltd | Real estate | 2023 |
| JV & G Ltd | Real estate | 2019 |
| JV Construction (Bedford) Ltd | Construction | 2025 |
| JVK Security & Fire Consultants Limited | Administrative & support | 2024 |
| JVM Construction Ltd | Construction | 2021 |
| Jvstech Limited | Real estate | 2004 |
| JW Aesthetics Ltd | Other services | 2026 |
| JW Construction Management Services Ltd | Construction | 2026 |
| JW Life Ltd | Financial services | 2025 |
| JWB (Cambridge) Limited | Real estate | 1999 |
| JWBAKENDA92 Ltd | Health & social care | 2017 |
| JWD Scott Limited | Construction | 2025 |
| JWH Performance Coaching Ltd | Education | 2026 |
| Jwintelligence Ltd | Construction | 2019 |
| JWM Construction Ltd | Construction | 2022 |
| Jwtechservices Limited | Information & communication | 2025 |
| Jxns Group Ltd | Information & communication | 2013 |
| JXP Consulting Limited | Professional & scientific | 2014 |
| Jxprops Ltd | Real estate | 2025 |
| Jynja Jynja Bar & Restaurant Limited | Extraterritorial | 2017 |
| JYP Holdings Ltd | Real estate | 2022 |
| JZ & SON Traction Limited | Transport & logistics | 2022 |
| JZE Investments Ltd | Real estate | 2026 |
| JZK Consulting Ltd | Health & social care | 2022 |
| K & D Izzard Transport Ltd | Transport & logistics | 2014 |
| K & D Property Portfolio Ltd | Real estate | 2022 |
| K & L Plumbing Heating & Property Services Ltd | Construction | 2020 |
| K & R Developments Limited | Real estate | 2023 |
| K & V Accessories Ltd | Wholesale & retail | 2020 |
| K and T Roofing Services Ltd | Construction | 2020 |
| K Burrows Limited | Administrative & support | 2007 |
| K D Hardiman Ltd | Construction | 2015 |
| K E Palmer Limited | Construction | 2005 |
| K Fitz Reinforcements Ltd | Construction | 2016 |
| K Interiors British & German Kitchens Ltd | Wholesale & retail | 2024 |
| K J Whiteley Communications Ltd | Professional & scientific | 2011 |
| K L Estates Management Ltd | Real estate | 2025 |
| K M Mortgages Ltd. | Financial services | 2017 |
| K O Pro Services Ltd | Real estate | 2019 |
| K Pros Invest Ltd | Financial services | 2026 |
| K Sturge Decorating Limited | Construction | 2017 |
| K T Services (Bedford) Limited | Transport & logistics | 2017 |
| K Tracey Flooring Limited | Construction | 2006 |
| K V Woodcock Ltd | Professional & scientific | 2024 |
| K Virtual Executive Solutions Ltd | Administrative & support | 2024 |
| K&D Property Investments Limited | Real estate | 2024 |
| K&L Aesthetics and Skin Clinic Ltd | Other services | 2021 |
| K&M Detailing Ltd | Administrative & support | 2025 |
| K&N Badhan and SON Properties Ltd | Real estate | 2023 |
| K&U Search Solutions Ltd | Administrative & support | 2023 |
| K-Array Ltd | Wholesale & retail | 2018 |
| K.A.B.L.E Ltd | Construction | 2020 |
| K.B. Pallets Limited | Administrative & support | 1998 |
| K.Crystal Ltd | Wholesale & retail | 2025 |
| K.I.R.A. UA Ltd | Construction | 2025 |
| K.K. Bedford Limited | Manufacturing | 2016 |
| K.M.W Building & Maintenance Ltd | Construction | 2017 |
| K2 25 Ltd | Construction | 2024 |
| K2 Aviation Limited | Transport & logistics | 2023 |
| K2 Central Services Ltd | Wholesale & retail | 2013 |
| K2 Interiors (UK) Ltd | Construction | 2013 |
| K2 Recovery Limited | Wholesale & retail | 2012 |
| K2 Roadworks Recovery Ltd | Transport & logistics | 2020 |
| K7 Consulting Limited | Real estate | 2009 |
| K9PAWS Ltd | Wholesale & retail | 2024 |
| K9RAWMEAT Bedford Ltd | Wholesale & retail | 2026 |