| Il-Uk Fresh Produce LimitedHarrow, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2011 |
| Imagination Europe LimitedLondon, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Imagination Technologies LimitedKings Langley, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1977 |
| Imagine Capital LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2017 |
| Impact Xm Europe LtdLeatherhead, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2009 |
| Imperial Cash & Carry LtdEdmonton, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1987 |
| Imperial Treasure Co., LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2016 |
| Imperial Wine and Spirits Merchant LimitedLondon, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Imporient LtdUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1974 |
| Imported Alcohol LimitedSpalding, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Imported Brands International LimitedRugby, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1992 |
| In the Room Wine LimitedWest Malling, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2022 |
| In Vino Veritas LtdTamworth, United Kingdom · UKin-vino-veritas.co.uk · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2002 |
| Inaparc LtdAlcester, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2009 |
| Inbrit Logistics LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1995 |
| Independent Wine LtdLondon, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Indevin UK LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2020 |
| IndexUnited Kingdom · newton-wines.co.uk · checked 13 Oct 2026 | | – | 3 | Australia, France, South AfricaRobertson | –Fine (producers) | – | – |
| Indian Grape Charmer LtdEastleigh, United Kingdom · UKindiangrapecharmer.com · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2021 |
| Indie Brands LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2011 |
| Indigena Wines LimitedErith, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Indigo Distribution LimitedThames Ditton, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2004 |
| Indigo Wine LtdLondon, United Kingdom · UKindigowine.com · checked 28 Oct 2026 | UK | 0 | – | – | –Premium (producers) | 8% | 2003 |
| Indimart Food & Beverages LimitedMilton Keynes, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2022 |
| Industrial Cleaning Equipment LimitedSouthampton, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1992 |
| Industrias Royal Termic S.l.Santomera, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2009 |
| Infinity Wines LimitedPotters Bar, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2015 |
| Infinoty LtdGuildford, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Inflexion Private Equity Partners LLPLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2005 |
| Inflight Initiatives LimitedStanmore, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1990 |
| Inn On the Park LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1984 |
| Innerworkings Europe LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1984 |
| Inside Trax LtdOxted, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2012 |
| Intatec LimitedStafford, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2002 |
| Intavola Italian Food & Wine Company LimitedLiverpool, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2014 |
| Interbev LtdAscot, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| International Centre For Technology LimitedIsle of Man, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| International Diplomatic Supplies LtdCrawley, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2005 |
| International Exhibition Co-Operative Wine Society LtdUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1981 |
| International Management Group LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1969 |
| International Plywood LtdStonehouse, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1981 |
| International Procurement and Logistics LtdLeeds, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2004 |
| International Wine ConsultancyLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2021 |
| International Wine LimitedIlkley, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2020 |
| International Wine Shippers LtdWithington, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2002 |
| Internatural Wines LtdLondon, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Intocast UK LtdRotherham, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2003 |
| Intrepid Wines LtdShepton Mallet, United Kingdom · UKintrepidwines.com · checked 28 Oct 2026 | UK | 0 | – | – | –Value (producers) | 0% | 2025 |
| Intriva Services LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2016 |
| Investec PLCLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1998 |