| SJJ & Daughters Ltd | Muir Of Ord | 2024 |
| SJL Country Services Limited | Romsey | 2017 |
| SJL Fishing Limited | Blandford Forum | 1999 |
| SJM Fishing Company Ltd. | Peterhead | 2017 |
| SJM Tree Surgery Limited | Robertsbridge | 2018 |
| SJN Pile (Farming) Ltd | Banbury | 2022 |
| SJP Rural Ltd | Bishop'S Stortford | 2020 |
| SJP Shipping Limited | Hull | 2026 |
| SJR Farming Limited | Wickford | 2006 |
| SJR Farms Ltd | Chichester | 2018 |
| SJS (Kent) Limited | Faversham | 2023 |
| SJS Consultants Limited | Bayston Hill | 1990 |
| SJS Fishing Ltd | Shetland | 2022 |
| SJS Livery Limited | Macclesfield | 2024 |
| SJS Pet Services Ltd | Dereham | 2024 |
| SJS Tree Services Ltd | Newbury | 2025 |
| SJW Farms Limited | Dunmow | 2026 |
| SJW Forestry Ltd | Blandford Forum | 2013 |
| SK Appliances Ltd | Leicester | 2021 |
| SK Equestrian Ltd | Shurlock Row | 2014 |
| SK Poultry Services Limited | Market Drayton | 2016 |
| SK Sporthorses Ltd. | Hitchin | 2016 |
| SK Sporting Limited | Ashford | 2020 |
| SK9 Kennels Limited | Cupar | 2025 |
| Skaife Farm Services Ltd | Skegness | 2021 |
| Skail Township Ltd | Shotts | 2016 |
| Skairfield Limited | Dumfries | 1998 |
| Skaithmuir Farming Limited | Coldstream | 2010 |
| Skatoo Ltd | Uttoxeter | 2024 |
| Skcm Ltd | Bedford | 2024 |
| Skeete Farms Limited | Ashford | 1996 |
| Skelton Agri Limited | Canterbury | 2022 |
| Skelton Farming Limited | Saltburn-By-The-Sea | 2005 |
| Skelton Farms (Ponton) Limited | Grantham | 2013 |
| Skelton Tree Services Ltd | Witney | 2025 |
| Skenchill Ltd | Gwent | 2024 |
| Skendleby Texels Limited | Spilsby | 1993 |
| Skenfrith Angling Club Limited | Monmouth | 2015 |
| Skerne Leys Haylage Limited | East Yorkshire | 2005 |
| Skerne Leys Limited | East Yorkshire | 2005 |
| Skerryvore Fishing Limited | Aberdeen | 2019 |
| Skewen Anglers Club Limited | Neath | 2025 |
| Skewkirk Farming Limited | York | 1986 |
| Skillicorn Anderson Associates International Ltd | Kingston Upon Thames | 2015 |
| Skills for Management and Career Development Ltd. | London | 2015 |
| Skills Kitchen & Wild Thing Mushroom Farm CIC | Bingley | 2021 |
| Skimble Crown Limited | Much Wenlock | 1979 |
| Skimmington Stud Limited | Harrow | 2021 |
| Skinnd Ltd | Ullapool | 2020 |
| Skinner 2014 Limited | Liverpool | 2014 |
| Skinner Farmers Limited | Wellingborough | 2026 |
| Skiphutton Limited | Thirsk | 2023 |
| Skirwith Abbey Limited | Penrith | 2012 |
| Skirwith Hall Farms Limited | Penrith | 2002 |
| Skis Trees Limited | Swindon | 2026 |
| Skog's Logs Limited | Penrith | 2009 |
| Skovfish Limited | Fraserburgh | 2006 |
| Skreppa Horses CIC | Ashford | 2021 |
| Skurron Farm Limited | Scousburgh | 2023 |
| Skutterskelfe Anglers Limited | Middlesbrough | 1984 |
| SKW Jones Limited | Broseley | 2011 |
| SKW Pigs Ltd | North Walsham | 2020 |
| Sky Equine Limited | London | 2023 |
| Sky Farm Limited | London | 2020 |
| Sky NE Limited | Whitley Bay | 2024 |
| Sky Park Farm Ltd | West Harting | 2020 |
| Sky Yonder Limited | Beckenham | 2021 |
| Sky-Pin Drones Ltd | Melrose | 2017 |
| Skycatcher Management Limited | Swindon | 2008 |
| Skyclear Solutions Ltd | Crawley | 2022 |
| Skydrone Services Ltd | Castle Douglas | 2025 |
| Skye & Lochalsh Rivers Trust | Isle Of Skye | 2008 |
| Skye Divers Limited | Edinburgh | 2015 |
| Skye Heritage Orchards Limited | Isle Of Skye | 2025 |
| Skye Scallop Divers Ltd | Portree | 2020 |
| Skye Shellfish Co Ltd | Portree | 2006 |
| Skyeacres Ltd | Bury | 2023 |
| Skyedrops Limited | Glasgow | 2025 |
| Skyfeather Innovations Ltd | London | 2025 |
| Skyforge Farriery Ltd | Peterborough | 2026 |
| Skylark Agritech Ltd | Chester | 2019 |
| Skylark Carbon Limited | Worcester | 2019 |
| Skylark Farm (Sutton Coldfield) Limited | Tamworth | 2017 |
| Skylark Farm Ltd | Melton Mowbray | 2024 |
| Skylark Farms (Owstwick) Ltd | Withernsea | 2025 |
| Skylark Flower Company Limited | Weybridge | 2018 |
| Skylark Precision Drone Solutions Ltd | Hurstpierpoint | 2025 |
| Skylas Spaniels Ltd | St Helens | 2020 |
| Skyline Civils Ltd | Fort William | 2014 |
| Skyline Tree Services Limited | Caernarfon | 2012 |
| Skyline Tree Surgery Ireland Limited | Downpatrick | 2023 |
| Skymore Farm Limited | Auchterarder | 2024 |
| Skysprouts Limited | Newton Abbot | 2018 |
| Skyview Acres Ltd | Nottingham | 2024 |
| Skyward Agricultural, Forestry and Environmental Services Ltd | Glasgow | 2023 |
| SL Regeneration Ltd | Bristol | 2026 |
| Slacks Farm Ltd | Lockerbie | 2025 |
| Slad Brook Limited | Stroud | 2000 |
| Slad Valley Mushrooms Limited | Cardiff | 2022 |
| Sladbrook Yorkshire Limited | Normanton | 2024 |