| Kypraiou & Associates Ltd. | Administrative & support | 2020 |
| Kyrachattar Ltd | Real estate | 2026 |
| KYS Properties Limited | Real estate | 1997 |
| Kyupak Limited | Professional & scientific | 2026 |
| KYW Plastic Surgery Ltd | Health & social care | 2026 |
| Kzero Worldswide Ltd | Professional & scientific | 2018 |
| L & a Solutions LLP | | 2026 |
| L & H Stores Limited | Wholesale & retail | 2013 |
| L .Best Projects Ltd | Construction | 2024 |
| L G Compton Ltd | Construction | 2020 |
| L Lashd Ltd | Other services | 2019 |
| L M Miller Limited | Construction | 2014 |
| L Sebastian Property Limited | Real estate | 2024 |
| L Webb Energy Limited | Construction | 2011 |
| L&L Management Ltd | Households | 2022 |
| L&S Innovations Ltd | Administrative & support | 2024 |
| L&S Law Firm Ltd | Professional & scientific | 2019 |
| L&V UK Construction Ltd | Administrative & support | 2019 |
| L. Mora Ltd | Manufacturing | 2024 |
| L.A Life Limited | Manufacturing | 2002 |
| L.C. Electrical Contractors Limited | Construction | 2013 |
| L.E. Residential Limited | Other services | 2017 |
| L.G.Car Sales Limited | Wholesale & retail | 2003 |
| L.G.R.R. Limited | Other services | 2003 |
| L.R Beauty Beads Ltd | Manufacturing | 2023 |
| L.W. Wedd & SON Limited | Construction | 1977 |
| L2S2 Limited | Information & communication | 2006 |
| L3 Point Limited | Professional & scientific | 2019 |
| LA Academy Cambridge Limited | Other services | 2025 |
| LA Academy LLP | | 2025 |
| LA Belle Mesure Ltd | Hospitality | 2024 |
| LA Cucina DI Nonna Ltd | Hospitality | 2025 |
| LA Latina Bustaurante Ltd | Other services | 2016 |
| LA Ltd | Extraterritorial | 2022 |
| LA Mode Cambridge Limited | Other services | 2014 |
| LA Nails (Cambridge) Limited | Other services | 2008 |
| LA Pizzetta UK Limited | Hospitality | 2022 |
| LA Pizzica Pizzeria Ltd | Hospitality | 2023 |
| LA Raza Ltd | Hospitality | 2006 |
| LA VIE Catchy Ltd | Wholesale & retail | 2020 |
| LA Vintique Maison Ltd | Wholesale & retail | 2022 |
| LA Vita Venture Ltd | Professional & scientific | 2023 |
| Laas General Trading Limited | Wholesale & retail | 2024 |
| Labhub Limited | Extraterritorial | 2015 |
| Laborsing UK Safety Products Limited | Wholesale & retail | 2018 |
| Labour-Tech Recruitment Limited | Administrative & support | 2003 |
| Labrequip Ltd | Professional & scientific | 2023 |
| Labscouse Consultancy Limited | Professional & scientific | 2023 |
| Lacanta Ltd | Health & social care | 2018 |
| Lacatusu Florin Aerospace Ltd | Manufacturing | 2026 |
| Lacey's Footwear (Wholesale) Limited | Wholesale & retail | 1981 |
| Laconial Limited | Financial services | 2021 |
| Lacuna Music Ltd | Information & communication | 2013 |
| Ladan.Composite Ltd | Manufacturing | 2025 |
| Ladies That Mulch Ltd | Administrative & support | 2019 |
| Lady Gigi Maintenance Syndicate Limited | Administrative & support | 2026 |
| Lady Jane Court Residents Association Limited | Real estate | 1979 |
| Lady Teal Ltd | Transport & logistics | 2009 |
| Ladywell Lake Limited | Arts & recreation | 2016 |
| Laetitia's and Company Limited | Financial services | 2025 |
| Laffling Design Technology Limited | Information & communication | 2003 |
| Lagcloud Solutions Limited | Information & communication | 2022 |
| Laguna Air Ltd | Manufacturing | 2023 |
| Laguna Ventures Limited | Professional & scientific | 2011 |
| Laidlaw and Cooke Ltd | Construction | 2026 |
| Laixi City Shunxiang Peanuts Product's Co., Ltd | Extraterritorial | 2014 |
| Laizhou Tenghui Automobile Fitting Co., Ltd | Wholesale & retail | 2025 |
| Lake Image Systems Limited | Manufacturing | 1994 |
| Lake Tower Limited | Wholesale & retail | 2026 |
| Lakehouse Residential Limited | Real estate | 2021 |
| Lakeland Music Services Limited | Arts & recreation | 2025 |
| Lakepharm Ltd | Wholesale & retail | 2018 |
| Lakeproppharm Ltd | Real estate | 2018 |
| Lakeside Court Management Company (Fleet) Limited | Households | 1991 |
| Lakeside View Country Park Limited | Hospitality | 2020 |
| Lakin Rose Company Secretaries Limited | Professional & scientific | 2004 |
| Lakin Rose Limited | Professional & scientific | 2005 |
| Laluubain Ltd | Information & communication | 2025 |
| LAM Aerotech Ltd | Manufacturing | 2023 |
| Lamaison Management Limited | Professional & scientific | 2023 |
| Lamaya Online Supplies Ltd | Administrative & support | 2020 |
| Lambda Cambridge Ltd | Information & communication | 2018 |
| Lambda Energy Ltd | Professional & scientific | 2018 |
| Lambda Founders Ltd | Financial services | 2023 |
| Lambda Services Group UK Limited | Information & communication | 2025 |
| Lambs Lane Management Company Limited | Households | 2014 |
| Lambs Yard Management Company Limited | Households | 2026 |
| Lambsquay Consulting of Cambridge Limited | Construction | 2016 |
| Lameca INT Ltd | Information & communication | 2013 |
| Lamonica Salon Limited | Other services | 2023 |
| Lampata Ltd | Information & communication | 2020 |
| Lanbin International Trade Co., Limited | Extraterritorial | 2018 |
| Land of Tigers and Dolphins Limited | Manufacturing | 2010 |
| Land Prime CS Ltd | Financial services | 2025 |
| Landart Landscape Contractors Limited | Administrative & support | 1989 |
| Landbeach Services Limited | Professional & scientific | 2012 |
| Landen Court Management Company Limited | Households | 1987 |
| Lander & Linsey Roofing Limited | Construction | 2005 |
| Landet International Co., Ltd | Extraterritorial | 2015 |
| Landium Ltd | Construction | 2025 |