| Life Legacy Limited | Cheltenham | 2025 |
| Life Support | Pulborough | 2008 |
| Lifecanopy Ltd | Derby | 2026 |
| Lifehea Grounds Ltd | Gillingham | 2021 |
| Lifesuckswithout... Limited | Cardiff | 2021 |
| Lifting Lords Ltd | Bampton | 2011 |
| Light Alder Ltd | Yeovil | 2021 |
| Light Hazzles Farm Livery Ltd | Littleborough | 2021 |
| Light Science Technologies Ltd | Derby | 2019 |
| Lightfoot Tree Services Ltd | Alton | 2024 |
| Lighthorne Tree Care Ltd | Daventry | 2025 |
| Lighthouse Carbon Offset Limited | Dunfermline | 2023 |
| Lighthouse Fishing Company Limited | Peterhead | 2021 |
| Lightoaks Gundogs Limited | St. Albans | 2025 |
| Lighton Farming Ltd | Boston | 2019 |
| Lightspeed Enterprise Ltd | London | 2014 |
| Lightwater Farms Limited | Ripon | 1976 |
| Lightwoods Green Ltd | Norwich | 2017 |
| Lignum Forestry Ltd | Derby | 2026 |
| Liknove Limited | Cardiff | 2021 |
| LIL Greens Limited | London | 2023 |
| LIL Star Ltd | London | 2025 |
| Lilac (Eco) Ltd | Derby | 2021 |
| Lilac Cottage Larder Ltd | Axminster | 2020 |
| Lilac Farming Ltd | Downham Market | 2021 |
| Lilburn Limited | Carlisle | 2013 |
| Lilford Farming Ltd | Aldwincle, Kettering | 2017 |
| Lili Lussi Ltd | London | 2025 |
| Lili WEN Farm Contracting Ltd | Pontypridd | 2019 |
| Lilias Flower Farm Limited | Newry | 2025 |
| Liliwen Limited | Llandeilo | 2006 |
| Lillechurch Farms & Contracting Ltd. | Rochester | 1996 |
| Lilley Dogs Ltd | Sunderland | 2025 |
| Lillico Limited | Fareham | 2018 |
| Lillifarms Limited | Gloucestershire | 1983 |
| Lilling Green Farm Ltd | Malton | 2025 |
| Lilliummeon Gundogs Limited | Alton | 2025 |
| Lillycombe Sporting Club Limited | Minehead | 2017 |
| Lillydot Limited | Milford Haven | 2023 |
| Lilwalls HOG Roasts Limited | Norwich | 2008 |
| Lily & Charles Ltd | Wirral | 2022 |
| Lily Fisheries (Essex) Ltd | Grays | 2023 |
| Lily Fisheries Ltd | Grays | 2019 |
| Lily Hill Australian Labradoodles Ltd | Hook | 2024 |
| Lily Oak Fishing Company Limited | Buckie | 1986 |
| Lily's Veganics Ltd | Bexhill-On-Sea | 2023 |
| Lilylane Farms Limited | Taunton | 2012 |
| Lilypad Trading Limited | Liverpool | 2015 |
| Lilyswagginwalks Ltd | Redditch | 2025 |
| Lilywood Farm Ltd | Scarborough | 2024 |
| Lima Farming Limited | Betws Y Coed | 2017 |
| Limagrain (AR) Limited | Lincoln | 1986 |
| Lime END Farm Limited | Faversham | 2014 |
| Lime Environmental Limited | Bristol | 2017 |
| Lime Grove Poultry Ltd | Armagh | 2024 |
| Lime Kiln Farm 2020 Ltd | Norwich | 2020 |
| Lime Tree Services & Landscape Ltd | Nottingham | 2025 |
| Lime Walk Farm (Kirtlington) Limited | Oxford | 2021 |
| Limeage Solutions PVT Ltd | Harrow | 2025 |
| Limeco (Midlands) Limited | Sleaford | 2000 |
| Limecove Limited | Wimborne | 1989 |
| Limehillock Development Limited | Aberdeen | 1973 |
| Limekiln Farm Limited | Bristol | 2012 |
| Limes GS Limited | Carmarthen | 2014 |
| Limestone Farming Company Limited | Gainsborough | 1936 |
| Limetree Services Southern Ltd | Polegate | 2024 |
| Limitless Loops FLY Casting Ltd | Gosport | 2022 |
| Lincex Limited | Lincoln | 2011 |
| Lincoln Lake Limited | Carterton | 2018 |
| Lincoln Long Wool Sheep Breeders' Association(The) | Lincoln | 1892 |
| Lincoln ZOO Limited | Lincolnshire | 2005 |
| Lincolnshire Biomass Ltd | London | 2006 |
| Lincolnshire Field Products Limited | Spalding | 1984 |
| Lincolnshire Hardwoods Limited | Market Rasen | 2025 |
| Lincolnshire Herbs Ltd | Lincolnshire | 1997 |
| Lincolnshire Honeyberry Limited | Louth | 2025 |
| Lincolnshire Horticulture (Farms) Limited | Sleaford | 2025 |
| Lincolnshire Organics Limited | Scunthorpe | 2000 |
| Lincolnshire PIG Company Ltd | Sleaford | 2016 |
| Lincolnshire Pork Co Ltd | Gainsborough | 1947 |
| Lincolnshire Verge Harvesting Ltd | Boston | 2018 |
| Lincomb Equestrian Limited | Stourport On Severn | 2026 |
| Lincs Agricultural Contractors Ltd | Lincoln | 2014 |
| Lincs Aquatics Limited | Woodthorpe | 2005 |
| Lincs Forage Limited | Spalding | 2008 |
| Lincs Straw Limited | Wisbech | 2025 |
| Lind Agriculture Limited | Ellon | 1996 |
| Linda Williams and Associates Limited | Cardiff | 2013 |
| Lindaquatics UK Ltd | Galashiels | 2026 |
| Linden Barn Ltd | Northants | 2007 |
| Linden LEA Landscaping & Tree Services Limited | Roxburghshire | 2003 |
| Linden Tree Surgeons Limited | Ascot | 2020 |
| Lindertis Company (South) Limited | Dundee | 1998 |
| Lindertis Company Limited | Kirriemuir | 1961 |
| Lindertis Farms Limited | Kirriemuir | 1998 |
| Lindfield Eyecare Limited | Haywards Heath | 2013 |
| Lindgaards Skraelleri OG Gardbutik Ltd | London | 2025 |
| Lindisfarne Luing Limited | Berwick-Upon-Tweed | 2010 |
| Lindisfarne Oysters Ltd | Berwick-Upon-Tweed | 2012 |
| Lindley Hall Farms Limited | Nuneaton | 1976 |