| Jimmy Products UK LimitedRetford, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2020 |
| Joi Productions LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2016 |
| Jp Fine Wines LtdChalgrove, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2025 |
| Jt Man Group LtdManchester, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2024 |
| Juergen Teller LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2001 |
| Juls London LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2022 |
| Junkwize LtdWimbledon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2012 |
| Kaboodle Solutions LtdManchester, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2015 |
| Kalita Clothing LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2016 |
| Kalkedon LimitedEdinburgh, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2019 |
| Kangaroo International Express LtdPoyle, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 1989 |
| Karafe LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2020 |
| Keating Chambers Service Company LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2004 |
| Keepit Technologies UK, LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2021 |
| Kellars LimitedShildon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2001 |
| Kent St Wines UK LtdHayes, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2011 |
| Kerzner International Marketing LimitedKnightsbridge, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 1985 |
| Khoki United LimitedBushey, United Kingdom · UKkhokiunited.com · checked 28 Oct 2026 | UK | 1 | – | – | – | – | 2022 |
| Kilfinichen Farms LimitedWickford, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 1989 |
| Kimm & Miller LtdBedford, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2006 |
| Koru Liquor Brands Sourcing LtdDunmow, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2019 |
| Kuredo Group LtdLeamington Spa, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2020 |
| L'Isola Buona LimitedNewhaven, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2009 |
| La Cala Mb LtdMenai Bridge, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2019 |
| La Cantina Direct LimitedSkipton, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2019 |
| La Cantina Sociale LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2014 |
| La Casa Delicatessen LtdNewcastle upon Tyne, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2015 |
| La Tua Pasta LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2005 |
| Laculle Family and Partners LtdChislehurst, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2014 |
| Lagan Building Solutions LtdUnited Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2001 |
| Lala V LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2025 |
| Lalibela UK LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2015 |
| Langosteria London LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2023 |
| Languedoc Imports LtdChesham, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2016 |
| Last Drop Wines LimitedWallington, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2008 |
| Lavazza Professional UK LimitedBasingstoke, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2008 |
| Lc Marketing Plus LtdFalmouth, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2010 |
| Le Cheval Noir LtdColchester, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2012 |
| Lean Brands LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2024 |
| Leaside Books LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2014 |
| Lebanos Food LimitedPark Royal, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2011 |
| Ledbury Wine LimitedTewkesbury, United Kingdom · UKledburywine.com · checked 28 Oct 2026 | UK | 1 | – | – | –Fine (producers) | 0% | 2010 |
| Left Bank Pictures LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2006 |
| Leicester City Football Club LimitedLeicester, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2002 |
| Lenham Storage LtdCrawley, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 1966 |
| Lesser & Pavey LimitedDartford, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 1971 |
| Let's Get It Wrapped LimitedEast Grinstead, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2023 |
| Libra Drinks Wholesale LtdBirmingham, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2005 |
| Lieber Strategies UK LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2013 |
| Lieux Dits LtdSutton, United Kingdom · UKchecked 28 Oct 2026 | UK | 1 | – | – | – | – | 2025 |