| Q.Arb Limited | Wallingford | 2026 |
| Q.F.F (N.I) Ltd | Dungannon | 2025 |
| Q8SALEH Ltd | Ruislip, | 2026 |
| Qarlbo Scotland Ltd | Dundee | 2023 |
| QBS Enterprises Ltd | Haywards Heath | 2022 |
| QDL Stud Ltd | Bedford | 2024 |
| QE Holdings Ltd | Cawsand | 2015 |
| QFF Distribution Limited | Leicester | 2014 |
| Qiaoman Trading Co., Limited | Stafford | 2025 |
| Qiqi Fruit Limited | Cardiff | 2021 |
| QL Global CIC | Caerphilly | 2016 |
| Qpsupplies Ltd | Swansea | 2020 |
| QT Agri Limited | Dorset | 2021 |
| Quadrangle Limited | Cambridge | 1983 |
| Quadrotor Services Ltd | Wallasey | 2023 |
| Quahead Wood Limited | Stirling | 2022 |
| Quainton Dairy Limited | Aylesbury | 1972 |
| Quakers Kennels & Cattery Ltd | Stonehouse | 2024 |
| Qualitree Ltd | Whyteleafe | 2020 |
| Qualitree Services Limited | Maidstone | 2013 |
| Quality and Compliance First Ltd | Stirling | 2014 |
| Quality British Foods Limited | Winchester | 2014 |
| Quality Equestrian Services Ltd | Potters Bar | 2019 |
| Quality Farming Cambs Ltd | Peterborough | 2023 |
| Quality Fruit & VEG Limited | Peterborough | 2005 |
| Quality Meat Scotland Limited | Edinburgh | 2009 |
| Quality Plants Limited | Norwich | 1997 |
| Quality Welsh Food Certification Limited | Aberystwyth | 2000 |
| Quallty House Group Ltd | Sowerby Bridge | 2022 |
| Quan Farming Company Ltd | Hereford | 2001 |
| Quantech Solutions (UK) Ltd | Old Malton | 2010 |
| Quantifa Ltd | London | 2021 |
| Quantified Tree Surveys Limited | Newcastle Upon Tyne | 2009 |
| Quantil Agriculture Limited | Ormskirk | 1997 |
| Quantil Limited | Ormskirk | 1970 |
| Quantock & Exmoor Tree Care Ltd | Taunton | 2016 |
| Quantock Casualty Services Limited | Taunton | 2004 |
| Quantock Farm Ltd | Bridgwater | 2020 |
| Quantock Loler and Tree Care Ltd | Bridgwater | 2025 |
| Quantum Agri Nutrition Ltd | Brampton | 2025 |
| Quantum Hydroponic Services Ltd | London | 2026 |
| Quantum Leap Racing Breeding II Ltd | London | 2013 |
| Quantumbox Ltd | London | 2025 |
| Quantus Services Scotland Limited | Peterhead | 2013 |
| Quarnford Estates Limited | Lancaster | 1987 |
| Quarrington Farms Ltd | Durham | 2014 |
| Quarry and Earthworks Limited | Bristol | 2015 |
| Quarry Bottom Farm Ltd | Harrogate | 2018 |
| Quarry Herd Ltd | Banbridge | 2017 |
| Quarry Hill Farm (Ledbury) Limited | Bromyard | 2019 |
| Quarry Hill Farming Ltd | Wells | 2023 |
| Quarry Hill Puppy Love Ltd | Coalville | 2026 |
| Quarry Poultry Farm Ltd. | Strathaven | 2016 |
| Quarryside Farms Limited | Little Weighton | 1987 |
| Quarryside Livestock Ltd | Holmfirth | 2025 |
| Quarrywood Services Limited | Aberlour | 2026 |
| Quattro Lodge Limited | Haverfordwest | 2017 |
| Quayfish Limited | Greenock | 2015 |
| Quaymount Limited | King'S Lynn | 1975 |
| Queen Court Farm Estate Limited | Faversham | 1988 |
| Queen of Cats Limited | Attleborough | 2021 |
| Queenford Farm Ltd | Wallingford | 1996 |
| Queenholme Equestrian Limited | Loughborough | 2026 |
| Queensberry Farming Limited | Thornhill | 2017 |
| Queensmead Farm Limited | Exeter | 2025 |
| Queensmead Ltd | Exeter | 2019 |
| Queensmere Forestry and Trading Limited | London | 2014 |
| Queensquare Farming Limited | Bath | 2011 |
| Queenstonbank Farm Limited | North Berwick | 1949 |
| Quendale Farm Limited | Shetland | 2014 |
| Quercast Sawmilling Limited | King'S Lynn | 2022 |
| Quercus & Conifer UK Ltd | Stafford | 2023 |
| Quercus Garden Plants Limited | Peebles | 2003 |
| Quercus Tree Services Limited | Ashford | 2005 |
| Quercus Tree Specialists Ltd | Olney | 2022 |
| Quest Fishing Limited | St. Austell | 2025 |
| Quetzal Limited | Edinburgh | 2011 |
| Quex Park Estates Company Limited(The) | Kent | 1945 |
| Quianto Polo Limited | London | 2023 |
| Quianto Polo Stud Limited | London | 2025 |
| Quick & Co (Devon) Ltd | Crediton | 2002 |
| Quick & Sons Farm Limited | Somerset | 1985 |
| Quickcall Limited | Lincs | 1985 |
| Quickes Traditional Limited | Exeter | 2002 |
| Quickpure Limited | Cambridge | 1997 |
| Quiet Waters Fishing Company Limited | Lerwick | 2007 |
| Quill Hall Arboriculture Limited | Amersham | 2019 |
| Quinlan Farriery Limited | Hungerford | 2011 |
| Quinn Agricultural Contracting Ltd | Newry | 2014 |
| Quinn Bees Suffolk Ltd | Ipswich | 2023 |
| Quinn Farms Ltd | Newry | 2023 |
| Quinn Fisheries Limited | Weymouth | 2018 |
| Quinn Forestry Limited | Bexhill-On-Sea | 2021 |
| Quinn Silage Limited | Cookstown | 2012 |
| Quintana Ltd | Heathfield | 2010 |
| Quinton Arable Ltd | West Wycombe Village | 2022 |
| Quinton Farms Ltd | Newtownards | 2025 |
| QUODITCH21 Ltd | Newton Abbot | 2015 |
| Quoile Agri Limited | Downpatrick | 2018 |
| Quorn Hunt Limited | Melton Mowbray | 2013 |