| Little Dessert Shop Limited | Wholesale & retail | 2014 |
| Little House of Fragrance Limited | Wholesale & retail | 2017 |
| Little Incredibles Childcare Ltd | Health & social care | 2016 |
| Little Lambs Baby Time Ltd | Education | 2023 |
| Little Lambs Day Nursery Ltd | Health & social care | 2016 |
| Little Nest Co. Limited | Wholesale & retail | 2014 |
| Little Oaks Management Limited | Households | 1991 |
| Little Red Chilli Limited | Hospitality | 2017 |
| Little Red Engine Ltd | Wholesale & retail | 2025 |
| Little Steps Transport Ltd | Transport & logistics | 2026 |
| Littlebell Limited | Real estate | 2006 |
| Littlebury Developments Limited | Construction | 2016 |
| Littlebury Group Limited | Financial services | 2026 |
| Littlebury Holdings Limited | Financial services | 2016 |
| Littlejohn & Co Ltd | Wholesale & retail | 2014 |
| Liugo Ltd | Information & communication | 2020 |
| LIV Lauryn Ltd | Construction | 2021 |
| Livdesk Ltd | Wholesale & retail | 2026 |
| Live @ the Academy CIC | Information & communication | 2022 |
| Live in Style Limited | Real estate | 2003 |
| Live Lane Training Ltd | Education | 2024 |
| Live Your Fantasy Ltd | Wholesale & retail | 2023 |
| Livewell Apartments Ltd | Real estate | 2020 |
| Livewell Houses Ltd | Real estate | 2019 |
| Livewell Property Investments Ltd | Real estate | 2019 |
| Livewell Realty Group Ltd | Professional & scientific | 2019 |
| Livewire Media Services Ltd | Information & communication | 2023 |
| Livewire Property Ltd | Real estate | 2023 |
| Living Impact Christian Centre Ltd | Other services | 2024 |
| Living Plus Care Services Peterborough and Cambridgeshire Ltd | Administrative & support | 2025 |
| Living the Dream Properties Limited | Construction | 2020 |
| Living Water World Outreach | Other services | 2007 |
| Livvit Property Ltd | Real estate | 2019 |
| Liyan Ltd | Health & social care | 2018 |
| LIZ Gooster Ltd | Professional & scientific | 2015 |
| Lizita Refurbs Ltd | Manufacturing | 2024 |
| Lizzy African Food Ltd | Hospitality | 2024 |
| LJ Care Homes Ltd | Health & social care | 2004 |
| LJ Home Care Services Ltd | Health & social care | 2015 |
| LJ Landscapes Ltd | Administrative & support | 2018 |
| LJH Solutions Limited | Wholesale & retail | 2022 |
| LJL Group Limited | Construction | 2023 |
| LJM Bookkeeping Ltd | Professional & scientific | 2021 |
| LJN Gardens & Groundworks Ltd | Administrative & support | 2022 |
| LJS Enterprise Ltd | Wholesale & retail | 2022 |
| LJT Computing Ltd | Information & communication | 1998 |
| LK Couriers Ltd | Wholesale & retail | 2022 |
| LK Legacy Play Ltd | Construction | 2026 |
| LK UK Logistics Ltd | Transport & logistics | 2017 |
| LKG Wheel Repair Limited | Wholesale & retail | 2023 |
| LKJ Finance Ltd | Financial services | 2023 |
| LKL Motors Ltd | Wholesale & retail | 2025 |
| Lkott Consulting Ltd | Professional & scientific | 2021 |
| LKS Food Technology Limited | Information & communication | 2015 |
| LL Property Services Limited | Real estate | 2016 |
| LLC Storage Ltd | Transport & logistics | 2022 |
| Lldrive Ltd | Administrative & support | 2024 |
| Lleblanc Properties Ltd | Real estate | 2025 |
| LLM Construction Ltd | Construction | 2024 |
| Lloyd Roden Consultancy Ltd. | Administrative & support | 2013 |
| Llto Construction Limited | Construction | 2026 |
| LM Contractor Limited | Administrative & support | 2018 |
| LM Investment Holdings Limited | Real estate | 2024 |
| LM Jamieson Limited | Health & social care | 2006 |
| LM Optical Ltd | Health & social care | 2023 |
| Lmac Consultancy Services Limited | Construction | 2024 |
| LMB Consultancy Ltd | Arts & recreation | 2026 |
| LMC Details Ltd | Wholesale & retail | 2024 |
| LMG Contracts Limited | Wholesale & retail | 2017 |
| LMGO4 Ltd | Wholesale & retail | 2024 |
| LMM Green Engineering Ltd | Professional & scientific | 2018 |
| LN Tyres Ltd | Wholesale & retail | 2025 |
| LNF Cleaning Services Limited | Administrative & support | 2018 |
| LNS Food Limited | Hospitality | 2025 |
| LNW Capital Limited | Extraterritorial | 2016 |
| Lnzi Limited | Transport & logistics | 2020 |
| Loan & Partners Consulting Ltd | Professional & scientific | 2025 |
| Local Centre Hampton Hargate Management Company Limited | Households | 2002 |
| Local Coffee Shop Ltd | Hospitality | 2019 |
| Local Energy Grants Ltd | Other services | 2023 |
| Local Leaflet Distribution Limited | Information & communication | 2020 |
| Local POS Ltd | Information & communication | 2026 |
| Locate Accommodation Limited | Hospitality | 2016 |
| Lockhead Investments Ltd | Real estate | 2025 |
| Locking Grove Ltd | Households | 2004 |
| Locking Moor Residents Company Limited | Households | 2001 |
| Locking Parklands (Phase 5 Block 4) Management Company Limited | Households | 2021 |
| Locks and Shades Limited | Other services | 2016 |
| Locum Bay Ltd | Wholesale & retail | 2022 |
| Locumpanda Ltd | Professional & scientific | 2026 |
| Lodge Farm Commercials Ltd | Wholesale & retail | 2024 |
| Lodge Farm Dog Parks Limited | Arts & recreation | 2026 |
| Lodge Lawn Limited | Real estate | 2025 |
| Lodgewood Solutions Limited | Real estate | 2010 |
| LOG SOL Limited | Transport & logistics | 2023 |
| Logex Services Limited | Transport & logistics | 2002 |
| Logic Foundry Limited | Information & communication | 2023 |
| Logic Service Management Limited | Administrative & support | 2012 |
| Logike IT Services Limited | Information & communication | 2014 |
| Logistic Chain Ltd | Transport & logistics | 2020 |