| J & G Health Care Limited | Health & social care | 2019 |
| J & G Properties Development Specialists Limited | Real estate | 2017 |
| J & G PUB Co. Ltd | Hospitality | 2025 |
| J & H Patrick Holdings Ltd | Real estate | 2016 |
| J & J Epworth Ltd | Wholesale & retail | 2019 |
| J & J Properties (Breaston) Limited | Real estate | 2015 |
| J & L Turner Ltd | Real estate | 2024 |
| J & M Flooring Services Limited | Construction | 2012 |
| J & M Humphris Limited | Extraterritorial | 2010 |
| J & M Oates Ltd | Construction | 2025 |
| J & MK Associates Ltd | Professional & scientific | 2000 |
| J & N BIZ Solutions Limited | Administrative & support | 2014 |
| J & P Property Investments Limited | Real estate | 2017 |
| J & R Joinery Ltd | Construction | 2002 |
| J & S Interior Contractors Limited | Construction | 2022 |
| J & T Lloyd Limited | Health & social care | 2019 |
| J & T Solanke Ltd | Health & social care | 2024 |
| J & W K Fisher Limited | Agriculture & fishing | 2011 |
| J a B (Jayne Arnold Book-Keeping) Services UK Limited | Professional & scientific | 2014 |
| J a Baddeley & Co Ltd | Manufacturing | 2020 |
| J a Ball Limited | Construction | 2012 |
| J a Building Services Limited | Construction | 2006 |
| J a F Lettings Ltd | Real estate | 2025 |
| J a Roofing Solutions Limited | Construction | 2026 |
| J Ahmed Medical Services Limited | Health & social care | 2025 |
| J and H Cleaning Services Ltd | Administrative & support | 2015 |
| J Aslam Limited | Financial services | 2023 |
| J B B Consulting Limited | Professional & scientific | 2010 |
| J B Direct Deliveries Ltd | Transport & logistics | 2024 |
| J B Nottingham Limited | Real estate | 2003 |
| J Beach Limited | Professional & scientific | 2020 |
| J Booth Electrical Limited | Construction | 2018 |
| J Broughton Catering Ltd | Hospitality | 2019 |
| J Burnham Marketing Limited | Professional & scientific | 2006 |
| J C Baxters Limited | Transport & logistics | 2024 |
| J C C J Limited | Agriculture & fishing | 2001 |
| J C H Holdings (Nottingham) Ltd | Real estate | 2016 |
| J C Micro Limited | Information & communication | 2004 |
| J C Multilight Limited | Manufacturing | 2010 |
| J Charlton Limited | Health & social care | 2015 |
| J Chuen Limited | Health & social care | 2024 |
| J Coleman Electrical Services Ltd | Construction | 2023 |
| J D Allen Limited | Financial services | 2008 |
| J D Estates UK Ltd | Construction | 2004 |
| J D H Flooring Ltd | Construction | 2017 |
| J D Joinery & Construction Limited | Construction | 2013 |
| J D Mindcoach Ltd | Education | 2014 |
| J D Motor Company (Nottingham) Ltd | Wholesale & retail | 2010 |
| J D Utilities Limited | Construction | 2012 |
| J Damon Holdings Ltd | Financial services | 2024 |
| J Developments Ltd | Wholesale & retail | 2015 |
| J Dickson Hair Ltd | Other services | 2019 |
| J E & M B Joinery Limited | Construction | 2015 |
| J E S Smith Limited | Financial services | 2008 |
| J E Taylor Limited | Real estate | 2017 |
| J E&M Property Ltd | Households | 2025 |
| J Fahy Property Investments Limited | Real estate | 2021 |
| J Fishers Properties Ltd | Real estate | 2026 |
| J Fitzsimmons Property Ltd | Real estate | 2024 |
| J Fitzsimmons Services Ltd | Information & communication | 2021 |
| J G Dyer Building Services Ltd | Construction | 2012 |
| J G Hopkins Ltd | Construction | 2025 |
| J G L Law Limited | Financial services | 2012 |
| J G Ratcliff Limited | Construction | 2010 |
| J G Rentals Limited | Real estate | 2024 |
| J G Tidy Team Limited | Hospitality | 2025 |
| J G Travel Limited | Transport & logistics | 2007 |
| J G Ultrasound Services Limited | Health & social care | 2023 |
| J Garvey Ltd | Professional & scientific | 2023 |
| J Gaunt Architecture Ltd | Professional & scientific | 2021 |
| J Gibbons Holdings Ltd | Professional & scientific | 2026 |
| J H Creative Limited | Professional & scientific | 2023 |
| J H Joinery Services (Midlands) Limited | Construction | 2010 |
| J H Motors Limited | Wholesale & retail | 2013 |
| J Halliley Ltd | Other services | 2021 |
| J Harris & Sons (Builders) Limited | Extraterritorial | 2009 |
| J Hart Bushes Farm Ltd | Real estate | 2025 |
| J Hart Property Limited | Real estate | 2018 |
| J Howitt & SON Limited | Manufacturing | 1972 |
| J Hull Builders Limited | Construction | 2020 |
| J J & a Developments Ltd | Real estate | 2026 |
| J J Builders Limited | Construction | 2003 |
| J Jet-Washing & Clearance’S Ltd | Administrative & support | 2025 |
| J Johnson Services Ltd | Professional & scientific | 2025 |
| J K J S Transport Ltd | Transport & logistics | 2017 |
| J K M Civils Ltd | Construction | 2024 |
| J K Pharmaceuticals Limited | Health & social care | 1987 |
| J K Property Law Ltd | Professional & scientific | 2021 |
| J K Vehicle Services Limited | Professional & scientific | 2018 |
| J K Vending Ltd | Wholesale & retail | 2018 |
| J Kaur Properties Ltd | Real estate | 2025 |
| J Kelly Limited | Professional & scientific | 2023 |
| J L Construction Notts Ltd | Construction | 2025 |
| J L GAS & Electrical Ltd | Construction | 2021 |
| J L Hall Holdings Ltd | Financial services | 2025 |
| J L Millward Limited | Financial services | 2011 |
| J L Steel Limited | Construction | 2016 |
| J L W Electrical Ltd | Construction | 2018 |
| J Lawson Properties Ltd | Real estate | 2025 |
| J Ledwood Ltd | Wholesale & retail | 2025 |