| Kerpac LimitedHoniton, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Kerry Ingredients & Flavours LtdUnited Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Kerzner International Marketing LimitedKnightsbridge, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1985 |
| Key Wine Company LimitedBanstead, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2022 |
| Khione LtdCardiff, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2021 |
| Khoki United LimitedBushey, United Kingdom · UKkhokiunited.com · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2022 |
| Kiffe My Wines LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2015 |
| Kilfinichen Farms LimitedWickford, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1989 |
| Killywoolaghan LtdStewartstown, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2017 |
| Kimm & Miller LtdBedford, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2006 |
| King West LimitedLeicestershire, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2000 |
| Kings College,cambridgeUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1981 |
| Kingscote Estate & Vineyard LimitedEast Grinstead, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Kingsland Drinks LimitedManchester, United Kingdom · UKkingsland-drinks.com · checked 26 Oct 2026 | UK | 0 | – | – | –Value (producers) | 6% | – |
| Kingsley Interiors LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2016 |
| Kipferl Patisserie LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Kiss of Wine LimitedMilton Keynes, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2020 |
| Kitchen Table Restaurants LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2012 |
| Knauf Insulation LimitedUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1985 |
| Knightvale Leisure LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2002 |
| Korona Wholesale LtdWest Bromwich, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2008 |
| Koru Liquor Brands Sourcing LtdDunmow, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Koulagency LtdNortholt, United Kingdom · UKkoulagency.com · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2024 |
| Kreglinger LimitedNorthampton, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1972 |
| Krl LtdAccrington, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2015 |
| Kronospan LtdWrexham, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1970 |
| Kukuruz LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2017 |
| Kuredo Group LtdLeamington Spa, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2020 |
| Kwm Supplies LtdNewry, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| L & K Mining LtdBelvedere, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| L A Drinks Company LtdLurgan, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1995 |
| L' Italia Nel Bicchiere LimitedBromley, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2007 |
| L'Ami Jac LtdLondon, United Kingdom · UKlamijac.com · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2014 |
| L'Antica Bottega LtdGuildford, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2010 |
| L'Art du Vin LimitedDalgety Bay, United Kingdom · UKaduv.co.uk · checked 28 Oct 2026 | UK | 0 | – | – | –Premium (producers) | 22% | 2007 |
| L'Assemblage LimitedChichester, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1995 |
| L'Isola Buona LimitedNewhaven, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2009 |
| La Cala Mb LtdMenai Bridge, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| La Cantina Direct LimitedSkipton, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| La Cantina Sociale LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2014 |
| La Casa Delicatessen LtdNewcastle upon Tyne, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2015 |
| La Cave de Bruno LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2013 |
| La Cuina LimitedCardiff, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| La Dispensa LtdManchester, United Kingdom · UKdispensa.com · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2021 |
| La Diva Drinks & Food LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2008 |
| La Dolce Vita Kent LimitedNr Sevenoaks, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2012 |
| La Fromagerie LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2002 |
| La Lola LtdCheltenham, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2020 |
| La Madeleine Wines LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2018 |
| La Mia Italia LtdBrentwood, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2011 |