| Salthill Farm Ltd | Chichester | 2023 |
| Salthorse Stud Farm Limited | Emsworth | 2008 |
| Salthouse Luxury Pet Boarding Ltd | Cardiff | 2018 |
| Salthouse Pet Boarding Limited | Stoke-On-Trent | 2025 |
| Saltire Fishing Ltd | Elgin | 2026 |
| Saltire Highland Farms Limited | Alness | 2023 |
| Saltire Highland Ltd | Alness | 2023 |
| Saltmarsh Farms Limited | Eastbourne | 2023 |
| Saltsea Limited | Aberdeen | 2004 |
| Saltwater Aquaculture Ltd. | Pentraeth | 2005 |
| Saltwic Country Dogs Limited | Cheltenham | 2024 |
| Salty Dog Game Fishing Limited | Haslemere | 2010 |
| Salty Hookers Ltd | Swansea | 2021 |
| Saltylip Ltd. | Dunfermline | 2023 |
| Salvesen Farming Limited | Edinburgh | 1997 |
| SAM & Kates Farm CIC | Chard | 2026 |
| SAM Construction Limited | Heathfield | 2002 |
| SAM Dracott Farrier Ltd | Farnham | 2022 |
| SAM Evans Associates Limited | Llansantffraid | 2020 |
| SAM Hardman (Chipping) Limited | Preston | 2010 |
| SAM Hesselden Limited | Pateley Bridge | 1967 |
| SAM Holtby Limited | Middlesbrough | 2018 |
| SAM Longthorp Limited | Doncaster | 1964 |
| SAM West Farriery Ltd | Rustington | 2025 |
| Sam's Garden Services Ltd | Fleetwood | 2022 |
| Sam's Sunflowers Limited | Hayling Island | 2020 |
| Samac Bloodstock UK Ltd | Newry | 2022 |
| SAMAC1 Ltd. | Ross-Shire | 2000 |
| Samaki Kidogo Limited | Lochgilphead | 2010 |
| Samaliz Ventures Ltd | London | 2019 |
| Samara Equine Ltd | Chippenham | 2025 |
| Samayanbrook Ltd | Pulborough | 2025 |
| Samchi Foods Ltd | London | 2026 |
| Samfio Cattery Ltd. | Nottinghamshire | 2005 |
| Samjas Consulting Limited | Newark | 2013 |
| Samler Landscapes Limited | Bath | 2003 |
| Samlet Bulls and Kennels Limited | Manchester | 2019 |
| Sampson K9 Products Ltd | Chelmsford | 2021 |
| Samrose Growers Limited | Worcester | 2021 |
| Samscaping Tree and Garden Services Ltd | Chorley | 2026 |
| Samson Eventing Ltd | Derby | 2025 |
| Samudra Scotland Limited | Oban | 2025 |
| Samuel Barlow Coal Company Limited | Halford Street Tamworth | 1997 |
| Samuel Eglington (Horticulture) Ltd | Dereham | 2009 |
| Samuel Harding & Sons Limited | Leicester | 1922 |
| Samuel Jackson Growers Limited | Swarkestone | 1978 |
| Samuel Moore Mckee Limited | Moneyrea | 1974 |
| Samuel Robinson & Sons (Cluntagh), Limited | Ballynahinch | 1964 |
| Samuel White & Company Limited | East Lothian | 1960 |
| Samuel's Tree Surgery Ltd | Royston | 2026 |
| Samworth Farms Limited | Nottingham | 2010 |
| Sam’S K9 Services Ltd | Newport | 2022 |
| SAN Pest UK Ltd | Barking | 2026 |
| Sanbrook Equestrian Ltd | Solihull | 2016 |
| Sancroft Agricultural Services Ltd | Eye | 2002 |
| Sancta Maria 2 Ltd | Newry | 2026 |
| Sancta Maria Fisheries Ltd | Newtownards | 2018 |
| Sanctuary (Whitbourne) Limited | Worcester | 1998 |
| Sanctuary Dairy Limited | Preston | 2022 |
| Sanctuary Farm Upshire Limited | Waltham Abbey | 2020 |
| Sanctuary Garden CIC | Norwich | 2025 |
| Sanctuary Ranch Ltd | Leeds | 2024 |
| Sanctuary Stud Ltd | Bridgwater | 2019 |
| Sand Beach Farm Ltd | Haverhill | 2024 |
| Sand Hall Limited | Somerset | 1997 |
| Sanda Island Limited | Rosyth | 2010 |
| Sandbach Agricultural Services Limited | Sandbach | 2013 |
| Sanderling Limited | London | 1971 |
| Sanders Fishing Company Limited | | 2004 |
| Sanders Haulage Limited | Lingfield | 2022 |
| Sanderson Poultry Ltd | Preston | 2010 |
| Sanderson Tree Care Ltd | Market Harborough | 2023 |
| Sandfields Farming Limited | Hull | 2021 |
| Sandfields Farms Limited | Ely | 2007 |
| Sandford (Fishing) Limited | Peterhead | 2002 |
| Sandford (NW) Limited | Southport | 2009 |
| Sandford Allotment and Gardens Limited | West Wickham | 2020 |
| Sandhawalia Farm Ltd | Lichfield | 2024 |
| Sandhill Farm Limited | Crawley | 2014 |
| Sandhill Properties Ltd | Co Antrim | 2003 |
| Sandhole Farm Ltd | Ashton-Under-Lyne | 2018 |
| Sandhole Stables Ltd | Ashton-Under-Lyne | 2018 |
| Sandhutton Growers Limited | Thirsk | 2002 |
| Sandibell Limited | Cranleigh | 1980 |
| Sandico (UK) Limited | By Arbroath | 2005 |
| Sandicroft Stud Ltd | Newark | 2026 |
| Sandilands Pigs Limited | Lincoln | 1998 |
| Sandlaw Farming Company | Turriff | 1997 |
| Sandoe & Sons Ltd | Bodmin | 2025 |
| Sandon Bury Farm Limited | Nr. Buntingford | 1964 |
| Sandon Game and Sporting Limited | Sandon | 2020 |
| Sandon House Farm Limited | Penkridge | 2025 |
| Sandor Eggs Farm Ltd | Liverpool | 2016 |
| Sandpiper Farms Limited | Morpeth | 1995 |
| Sandpits Farm Limited | Coventry | 2013 |
| Sandpitt Forge Limited | Worcester | 2006 |
| Sandpitt Forge Supplies Limited | Worcester | 1998 |
| Sandringham Road Allotments Limited | London | 2020 |
| Sandringham Stud & Bloodstock Limited | Diss | 2024 |
| Sands Agri Ltd | Perth | 2018 |