| JTS Corporate Holdings Limited | Professional & scientific | 2013 |
| JTS Corporate Solutions Limited | Administrative & support | 2004 |
| JTS Project Services Ltd | Administrative & support | 2026 |
| JTS Site Management Limited | Administrative & support | 2016 |
| Jubilee Properties (Warrington) Limited | Real estate | 2022 |
| Jude Llow Ltd | Wholesale & retail | 2023 |
| Juicy Consulting Ltd | Professional & scientific | 2021 |
| Juki Fpga Solutions Limited | Professional & scientific | 2017 |
| Julesgloriousfood Ltd | Hospitality | 2022 |
| Julhoa Ltd | Hospitality | 2019 |
| Julian IT Ltd | Information & communication | 2016 |
| Julian Sarginson Limited | Administrative & support | 2013 |
| Julie Foulds Ltd | Other services | 2006 |
| Jumbo Trade Ltd | Real estate | 2022 |
| Jump Equipe Ltd | Agriculture & fishing | 2013 |
| Juniper Cottage NW Limited | Administrative & support | 2023 |
| Juniper Stantonhall Limited | Information & communication | 2023 |
| Juno Insight Limited | Information & communication | 2026 |
| Just Blinds Lancashire Ltd | Wholesale & retail | 2022 |
| Just Blinds UK North Ltd | Wholesale & retail | 2023 |
| Just Enough Change Limited | Administrative & support | 2017 |
| Just Financial Group (PB) Ltd | Financial services | 2020 |
| Just Jeffery Limited | Information & communication | 2026 |
| Just Keep Rollin Ltd | Wholesale & retail | 2024 |
| Just Massage & Beauty Limited | Health & social care | 2022 |
| Just Massage Limited | Health & social care | 2022 |
| Just Packaging Limited | Wholesale & retail | 2019 |
| Just Vape Ltd | Manufacturing | 2017 |
| JUST4YOUONLINEUK Ltd | Wholesale & retail | 2017 |
| Juwaco Limited | Hospitality | 2024 |
| JV Electrical NW Limited | Construction | 2022 |
| Jvob Engineering Limited | Professional & scientific | 2017 |
| JW Carpets & Vinyls Ltd | Wholesale & retail | 2017 |
| JW Services NW Ltd | Transport & logistics | 2025 |
| JW Solutions & Consulting Limited | Administrative & support | 2024 |
| Jwas Services Limited | Professional & scientific | 2018 |
| JWC Engineering Services Limited | Administrative & support | 2017 |
| JWC Scaffolding Ltd | Administrative & support | 2025 |
| Jwcs Consultancy Ltd | Administrative & support | 2022 |
| JWD Enterprises Limited | Professional & scientific | 2018 |
| Jwebbtech Ltd | Professional & scientific | 2022 |
| Jwef Consulting Limited | Professional & scientific | 2017 |
| JWG Services Limited | Information & communication | 2019 |
| JWL Electrical Limited | Construction | 2023 |
| JXB Resources Limited | Professional & scientific | 2008 |
| JXT Consultancy Limited | Professional & scientific | 2016 |
| JY Scaffolding Ltd | Administrative & support | 2026 |
| JZ Consultancy Solutions Ltd | Administrative & support | 2021 |
| JZH Endeavours Limited | Professional & scientific | 2018 |
| K & a Management Limited | Professional & scientific | 2003 |
| K & J Consultancy Limited | Administrative & support | 2011 |
| K & JJ Associates Ltd | Real estate | 2021 |
| K & L Miller Property Finance Ltd | Financial services | 2018 |
| K & R Properties NW Ltd | Real estate | 2024 |
| K a W Consultancy Services Limited | Information & communication | 2013 |
| K Anderson Engineering Limited | Administrative & support | 2012 |
| K B Autobody Solutions Limited | Wholesale & retail | 2017 |
| K Bevan Ltd | Professional & scientific | 2025 |
| K Condron Productions Limited | Arts & recreation | 2021 |
| K Goodson Ltd | Administrative & support | 2016 |
| K Gray Design Engineering Limited | Professional & scientific | 2019 |
| K Management Solutions Ltd | Professional & scientific | 2019 |
| K S P Realty Investment Limited | Real estate | 2023 |
| K Shawarma Ltd | Hospitality | 2025 |
| K T M Business Solutions Limited | Professional & scientific | 2018 |
| K Wood Engineering Solutions Ltd | Professional & scientific | 2025 |
| K&C Engineering Consultancy Ltd | Professional & scientific | 2025 |
| K&G Prosperity Ltd | Real estate | 2022 |
| K&H Kitchen Limited | Hospitality | 2026 |
| K&I Food Ltd | Hospitality | 2026 |
| K&P Property Ltd | Real estate | 2023 |
| K&T Trans Ltd | Transport & logistics | 2023 |
| K,K & F Ltd | Hospitality | 2018 |
| K-Clinicians Limited | Administrative & support | 2023 |
| K-P Aunac Limited | Administrative & support | 2015 |
| K-R-Shiny Solutions Ltd | Information & communication | 2022 |
| K-Tel Records Ltd | Manufacturing | 2010 |
| K. a. Davies Electrical Ltd | Manufacturing | 2021 |
| K.A Omar Ltd | Professional & scientific | 2019 |
| K.A. Purbhoo Limited | Education | 2024 |
| K.A.J. Brickwork Limited | Construction | 2020 |
| K.Bell Landscapes Ltd | Administrative & support | 2022 |
| K.C Psychology Limited | Education | 2024 |
| K.N.J. Properties Limited | Other services | 2001 |
| K3 Engineering Limited | Professional & scientific | 2019 |
| K5 Business Finance Limited | Financial services | 2021 |
| K73 Ltd | Professional & scientific | 2023 |
| K9 Style Limited | Other services | 2020 |
| K9 Turf (North West) Limited | Administrative & support | 2019 |
| KA Imrie Healthcare Ltd | Wholesale & retail | 2022 |
| KA IT Ltd | Professional & scientific | 2015 |
| KA Pope Electricals Ltd | Construction | 2022 |
| Kaat Estates Ltd | Real estate | 2020 |
| Kaaviyam Limited | Information & communication | 2015 |
| Kaayu Rituals Ltd | Wholesale & retail | 2024 |
| KAB Engineering Services Limited | Administrative & support | 2008 |
| KAB Management Services Limited | Administrative & support | 2021 |
| Kader Hashmi Software Ltd | Information & communication | 2019 |
| Kaejid Investment Limited | Real estate | 2022 |
| Kaga Properties Limited | Other services | 2015 |