| Josam Maddocks Ltd | Real estate | 2019 |
| Joseph Mcclements Ltd | Transport & logistics | 2025 |
| Josh D Joinery Ltd | Manufacturing | 2025 |
| Joycey Hairs Limited | Wholesale & retail | 2025 |
| JP Gaslec Ltd | Construction | 2025 |
| JP Mechanic Limited | Wholesale & retail | 2025 |
| JP Property Management Northwest Limited | Households | 2018 |
| JR Home Solutions Ltd | Construction | 2025 |
| JR Rail Limited | Construction | 2016 |
| JS Elec Mech Limited | Manufacturing | 2025 |
| Jsf.Windservices Limited | Construction | 2025 |
| JSH Custom Fabrications Ltd | Manufacturing | 2021 |
| JSS Roofline Ltd | Construction | 2022 |
| Jthorne&Sons Limited | Transport & logistics | 2024 |
| Jukebox Solutions Limited | Manufacturing | 2021 |
| Jumpstart Renovations Limited | Construction | 2025 |
| Jupiter Electrical Services Ltd | Energy | 2025 |
| Just US Hardys Ltd | Arts & recreation | 2023 |
| Justdoors Liverpool Ltd | Wholesale & retail | 2026 |
| JW Web Design Limited | Professional & scientific | 2025 |
| Jwjr Ltd | Hospitality | 2025 |
| Jwwholesalesltd Ltd | Wholesale & retail | 2024 |
| K & F Mediterranean Super Market Ltd | Wholesale & retail | 2025 |
| K Sweeney Construction Ltd | Construction | 2017 |
| K&T Transport Ltd | Transport & logistics | 2014 |
| K.B. Home and Building Ltd | Construction | 2026 |
| K.B. Home and Building Theory Ltd | Construction | 2025 |
| K.J Decorating & Maintenance Ltd | Construction | 2025 |
| K.T. Parr Limited | Construction | 2019 |
| K8Z Cheeky Monkeyz Limited | Health & social care | 2014 |
| Kabab House Ltd | Hospitality | 2019 |
| Kaboom Ltd | Wholesale & retail | 2025 |
| Kaja Retail Ltd | Wholesale & retail | 2025 |
| Kami Estates Limited | Real estate | 2023 |
| Kamobiles Ltd | Wholesale & retail | 2026 |
| Kaparleplan Limited | Construction | 2023 |
| Kaps Freight Express Ltd | Wholesale & retail | 2017 |
| Karavias & Sosa Estates Limited | Real estate | 2024 |
| Kash Brickwork Ltd | Construction | 2017 |
| Katrina Jones Consulting Limited | Professional & scientific | 2015 |
| KB Construction (North West) Ltd | Construction | 2010 |
| KDC Fashion & Design UK Ltd | Wholesale & retail | 2017 |
| Kdkw Investments Limited | Real estate | 2023 |
| Keble Scaffold Hire Ltd | Construction | 2026 |
| Kech-Papesa Limited | Construction | 2024 |
| Kefi Gyros Ltd | Hospitality | 2026 |
| Keith Kelly Surfacing Limited | Construction | 2020 |
| Keith Quigley Limited | Construction | 2018 |
| Kemola Restaurant and Lounge Limited | Hospitality | 2023 |
| Kennan KAY Kerr Legal Services LLP | | 2010 |
| Kenvic & Fardan Limited | Health & social care | 2024 |
| Kevin Millington Limited | Administrative & support | 2015 |
| KF Property Solutions Ltd | Construction | 2024 |
| KG Car Sales Limited | Wholesale & retail | 2014 |
| Kick Crewing Services Ltd | Arts & recreation | 2020 |
| Kielder R&D Surveying Ltd | Professional & scientific | 2025 |
| Kindecs Holding Limited | Financial services | 2021 |
| Kindecs Limited | Construction | 2002 |
| Kindfulness Coffee Club | Health & social care | 2016 |
| Kingdom Drainage Ltd | Construction | 2025 |
| Kingdom Plumbing and Heating Engineers Ltd | Construction | 2021 |
| Kings Heath Property Co.Limited | Real estate | 1955 |
| Kinsella Clarke Executors Limited | Public administration | 2013 |
| Kinsella Clarke Limited | Professional & scientific | 2012 |
| KJ Rental Ltd | Real estate | 2024 |
| KJF Engineering Ltd | Professional & scientific | 2024 |
| KKL Properties Ltd | Real estate | 2024 |
| Kksarai Limited | Wholesale & retail | 2022 |
| Kllm M Group Ltd | Real estate | 2024 |
| KM Industrial Services Ltd | Construction | 2022 |
| Knowsley Car Valeting Ltd | Administrative & support | 2023 |
| Knowsley LD Ltd | Construction | 2018 |
| Knowsley Road Delivery Ltd | Hospitality | 2024 |
| KNT Mechanical Engineering Ltd | Professional & scientific | 2025 |
| KON Electrical Ltd | Manufacturing | 2025 |
| Kong EN Design Ltd | Construction | 2024 |
| Kool Control Ltd | Energy | 2019 |
| Kopi Ltd | Wholesale & retail | 2026 |
| Kottak Express International Ltd | Transport & logistics | 2018 |
| KP & SON Hotbox Hire Ltd | Administrative & support | 2018 |
| KR LEE Properties Ltd | Real estate | 2026 |
| Krupasanam Amma Ltd | Health & social care | 2022 |
| KT Global Advisory Limited | Professional & scientific | 2025 |
| Kutzner Property Partnership Ltd. | Real estate | 2024 |
| Kyazz Limited | Health & social care | 2017 |
| L & R Holiday Lets Ltd | Hospitality | 2025 |
| L D Land Developments Ltd | Construction | 2018 |
| L&C Sunrise International Ltd | Wholesale & retail | 2024 |
| L&G Support Ltd | Real estate | 2012 |
| L&H Nails & Beauty Limited | Other services | 2023 |
| L-Fit LPL Ltd | Arts & recreation | 2026 |
| L1 Heating & Plumbing Ltd | Construction | 2018 |
| L17 Limited | Wholesale & retail | 2014 |
| L20 Nails Ltd | Other services | 2025 |
| L4 Leisure Limited | Hospitality | 2025 |
| L51 Developments (Bootle) Ltd | Administrative & support | 2019 |
| L51 Developments Limited | Real estate | 2020 |
| Lad's Barber L30 Ltd | Other services | 2026 |
| Lady CC Ltd | Manufacturing | 2018 |
| Lady D Properties Limited | Real estate | 2023 |