| Lijina Properties Ltd | Real estate | 2024 |
| Limebank Consulting Limited | Professional & scientific | 2014 |
| Lincoln's Court Service (Blackpool) Limited | Households | 1976 |
| Lincs Accountancy Ltd | Professional & scientific | 2015 |
| Lindsay Wholesale Limited | Wholesale & retail | 2018 |
| Linguaset Limited | Professional & scientific | 1998 |
| Listeningwell Limited | Administrative & support | 2014 |
| Little Dreams Consulting Ltd | Health & social care | 2018 |
| Little Kickers Bexleyheath LLP | | 2015 |
| Little Kickers Bromley LLP | | 2015 |
| Little Luxe Lounge Lytham Ltd | Other services | 2026 |
| Little Red Tractor Limited | Health & social care | 2024 |
| Livelikeralph Community Interest Company | Arts & recreation | 2023 |
| Livieit Limited | Information & communication | 2017 |
| LK Cambs LLP | | 2015 |
| Llke Limited | Administrative & support | 2020 |
| Lloyd & Booth Ltd | Professional & scientific | 2014 |
| LMA Goods and Services Ltd | Wholesale & retail | 2023 |
| LMM Leisure Ltd | Hospitality | 2026 |
| LMT Express Limited | Transport & logistics | 2019 |
| LO Consultancy Limited | Information & communication | 2021 |
| LO Property Limited | Real estate | 2024 |
| Local Bureau Links Limited | Information & communication | 2018 |
| Locks of Love X Hairdressing Ltd | Other services | 2021 |
| Locksmiths North West Ltd | Other services | 2009 |
| Logic Mind Limited | Professional & scientific | 2017 |
| Loud Love Club Ltd | Arts & recreation | 2025 |
| Louise Farrell Consultancy Ltd | Administrative & support | 2017 |
| Love Heating Lytham Limited | Construction | 2024 |
| Lowther Court (Blackpool) Limited | Households | 1959 |
| Lowther Gardens (Lytham) Management Limited | Arts & recreation | 2011 |
| Loxam Riley (Oakridges) Limited | Construction | 2002 |
| LP Healthcare Limited | Financial services | 2019 |
| LQR Consultancy Ltd | Professional & scientific | 2025 |
| LS Design Ltd | Professional & scientific | 2023 |
| LS Properties Group Limited | Real estate | 2018 |
| LSA Beauty Services Limited | Other services | 2016 |
| LSA Consulting Limited | Professional & scientific | 2015 |
| Lucia Hair Ltd | Other services | 2023 |
| Lula's Marketing Ltd | Professional & scientific | 2025 |
| Lumanlife Ltd | Administrative & support | 2025 |
| Luna Logistica Limited | Administrative & support | 2024 |
| Lunopadel Ltd | Manufacturing | 2025 |
| Luscinia Solutions Limited | Information & communication | 2019 |
| Luvajob Ltd | Wholesale & retail | 2024 |
| Luxiq Limited | Professional & scientific | 2025 |
| Luxury Golden World Group Ltd | Professional & scientific | 2021 |
| Luxury Grand Resorts Ltd | Hospitality | 2021 |
| Luxury Resorts of Ominiscent Golden EYE (NWO19) Ltd | Real estate | 2021 |
| LXP Skills Ltd | Education | 2022 |
| LXP Talent Ltd | Administrative & support | 2024 |
| Lydia Clark Limited | Professional & scientific | 2015 |
| Lyndon Property Holding Limited | Real estate | 2016 |
| Lyndon Subcontractors Limited | Construction | 2016 |
| Lynskey Holdings Limited | Financial services | 2024 |
| Lynton Logistics Ltd | Transport & logistics | 2025 |
| Lyons Jewellers Limited | Wholesale & retail | 2020 |
| Lytham Brewery Limited | Wholesale & retail | 2007 |
| Lytham Catering Limited | Wholesale & retail | 2012 |
| Lytham Coach Trimming Ltd | Manufacturing | 2015 |
| Lytham Craft House Ltd | Hospitality | 2016 |
| Lytham Discount Pet Foods Ltd | Wholesale & retail | 2018 |
| Lytham DIY Limited | Wholesale & retail | 2012 |
| Lytham Dog Fields Ltd | Agriculture & fishing | 2026 |
| Lytham Dog Wash Ltd | Other services | 2026 |
| Lytham Estate Agents Ltd | Real estate | 2022 |
| Lytham Estate Company Limited | Real estate | 2016 |
| Lytham Estate Rentals Ltd | Real estate | 2021 |
| Lytham Exterior Spaces Ltd | Construction | 2024 |
| Lytham Eyewear Limited | Health & social care | 2013 |
| Lytham Float Company Limited | Other services | 2018 |
| Lytham Food Truck Ltd | Hospitality | 2022 |
| Lytham Funeral Service Ltd | Other services | 2007 |
| Lytham GIN Company Ltd | Manufacturing | 2018 |
| Lytham Golf Academy Ltd | Wholesale & retail | 2012 |
| Lytham HOP House Ltd | Hospitality | 2023 |
| Lytham Lash Company Limited | Other services | 2025 |
| Lytham Lavender Ltd | Wholesale & retail | 2022 |
| Lytham Lawyer Limited | Professional & scientific | 2015 |
| Lytham Medical Ltd | Health & social care | 2019 |
| Lytham Mini Market Limited | Wholesale & retail | 2025 |
| Lytham Motor Company Ltd | Wholesale & retail | 2019 |
| Lytham Pilates Studio Ltd | Other services | 2025 |
| Lytham Project Management Limited | Construction | 2023 |
| Lytham Properties Limited | Construction | 2002 |
| Lytham ST Annes Learning Trust | Other services | 2011 |
| Lytham ST Annes Nails & Spa Ltd | Other services | 2024 |
| Lytham ST Annes Posy Bowl Limited | Wholesale & retail | 2018 |
| Lytham ST Tanz Sunbeds Ltd | Other services | 2024 |
| Lytham St.Annes Estate Agents Ltd | Real estate | 2013 |
| Lytham Store Limited | Transport & logistics | 2026 |
| Lytham TAE Kwon-Do Ltd | Arts & recreation | 2016 |
| Lytham Teepee Co. Ltd | Hospitality | 2025 |
| Lytham Timber Ltd | Wholesale & retail | 2013 |
| Lytham Tyres and Exhausts Limited | Wholesale & retail | 2005 |
| Lytham United Reformed Church (Management Company) Limited | Households | 2017 |
| Lytham Van Hire Limited | Administrative & support | 2025 |
| Lytham Voice Community Interest Company | Information & communication | 2025 |
| Lytham Window Company Limited | Manufacturing | 2003 |
| Lytham Wine Company Limited | Hospitality | 2015 |