| ASH Copse Farm Limited | Dorking | 2016 |
| ASH Forestry Ltd | Cardiff | 2019 |
| ASH House Kennels Limited | Nantwich | 2016 |
| ASH LEA Cottage Nurseries Limited | Preston | 1976 |
| ASH Moss Limited | Cheltenham | 2017 |
| ASH Oaks Limited | Blandford | 1958 |
| ASH Projects Limited | Forfar | 2026 |
| ASH Tree Poultry Ltd | Banbridge | 2014 |
| ASH Woodlands Limited | Leighton Buzzard | 2006 |
| Ashbourne Allotment Association Limited | Ashbourne | 2011 |
| Ashbourne International Ltd | Southampton | 2016 |
| Ashbourne Organics Limited | Chelmsford, Essex | 2005 |
| Ashbrook Farm Limited | Aberdeen | 2022 |
| Ashbrooke Stud Ltd. | Bishop Auckland | 2019 |
| Ashbury Farms Contractors Limited | Swindon | 2017 |
| Ashbury Fisheries Ltd | Ipswich | 2019 |
| Ashby Self Storage Limited | Ashby-De-La-Zouch | 2016 |
| Ashby Tree Care Ltd | Ashby De La Zouch | 2025 |
| Ashclough Contractors Ltd | Manchester | 2019 |
| Ashcombe Farming Limited | London | 2001 |
| Ashcourt Farms Limited | Pocklington | 2014 |
| Ashcraig Farmers Limited | Selkirk | 2004 |
| Ashdale Farm Ltd | Nantwich | 2024 |
| Ashdale Sports Horses Ltd | Nantwich | 2019 |
| Ashdeane Services Limited | Great Yarmouth | 2000 |
| Ashdown and General Land Company (the) | Haywards Heath | 1981 |
| Ashdown Angling Ltd | New Romney | 2026 |
| Ashdown Organic Farms Limited | Hazelwood | 1996 |
| Ashdown Tree Limited | Hockley | 2020 |
| Ashdown Treesurgeons Limited | Richmond | 2019 |
| Ashenhurst Kennels Ltd | Leek | 2021 |
| Asher Farms Ltd | London | 2024 |
| Asherfield Farm Limited | Belper | 2023 |
| Asherfield Livery Limited | Belper | 2026 |
| Ashfield Activity Hub CIC | Nottingham | 2025 |
| Ashfield Farm Holdings Limited | Lochgilphead | 2026 |
| Ashfield Farmed Environment Services Ltd | Newark | 2011 |
| Ashfield Farms Ltd | Dungannon | 2023 |
| Ashfield Nursery Limited | Hoddesdon | 2014 |
| Ashfield Piggeries Ltd | Bradford | 2011 |
| Ashfields Farm Limited | Crewe | 2008 |
| Ashford Farms and Estates Limited | Fife | 2015 |
| Ashgill Racing Limited | Darlington | 2010 |
| Ashland Farming Limited | Saddington | 2018 |
| Ashlar Solutions Ltd | Cowfold | 2019 |
| Ashleworth Centre of Equestrian Services Limited | Gloucester | 2020 |
| Ashley Game Farm Ltd | Chulmleigh | 2018 |
| Ashley Harden Forestry & Agricultural Contracting Ltd | Haverfordwest | 2016 |
| Ashley Tree Services Ltd | Salford | 2017 |
| Ashley Tree Surgeons Ltd | Ringwood | 2024 |
| Ashling Farms Limited | Chichester | 2017 |
| Ashling Park Estate Ltd. | Chichester | 2011 |
| Ashmarden Limited | London | 1949 |
| Ashmere Farms Limited | Gravesend | 1996 |
| Ashmore and Strone Estate Limited | London | 2010 |
| Ashmore Arboricultural Services Limited | | 2002 |
| Ashmore Farm Limited | Staines-Upon-Thames | 2018 |
| Ashmore Properties (NI) Ltd | | 2003 |
| Ashmount Forge Limited | Cambridge | 2007 |
| Ashover Estates Limited | Lincoln | 1999 |
| Ashridge Bloodstock Ltd | Newmarket | 2022 |
| Ashridge Contracting Ltd | Fordingbridge | 2026 |
| Ashton Agricultural and General Limited | Kirkby In Furness | 2000 |
| Ashton Farms Limited | Salisbury | 2006 |
| Ashton Park Limited | High Wycombe | 2000 |
| Ashtree Farm Ltd | Armagh | 2025 |
| Ashtree Maintenance Limited | Bradford | 2022 |
| Ashtree Rescue and Rehabilitation Centre Ltd | Goole | 2024 |
| Ashtrees Limited | Leeds | 2003 |
| Ashwood ARB Ltd | Dunmow | 2026 |
| Ashwood House Farming and Rental Partnership Limited | Broadway | 2025 |
| Ashwood Poultry Limited | Taunton | 2016 |
| Ashwood Premier House Limited | Ossett | 2013 |
| Ashwood Trees Ltd | Exeter | 2023 |
| Ashworth Equestrian Ltd Ltd | Ivybridge | 2025 |
| Ashworth Forestry Limited | Northwich | 2025 |
| Asia the Ocean Ltd | Kington | 2025 |
| Asiakoo Ltd | Northampton | 2023 |
| Asiautos Ltd | Cambridge | 2024 |
| ASJ Poultry Ltd | Omagh | 2025 |
| Aska Marine Limited | Kyle Of Lochalsh | 2006 |
| Askew Investments Limited | Selby | 1972 |
| Askham Bryan College Company Ltd | York | 1993 |
| Askival West Limited | Isle Of Skye | 2017 |
| Askrigg Recreational Company Ltd | Liverpool | 2016 |
| ASL New Clee Limited | London | 2022 |
| ASL Nurseries Ltd | Selby | 2024 |
| Aslackby Property Holdings Limited | | 1998 |
| Aspect Arboriculture Limited | Banbury | 2012 |
| Aspect Land Management Ltd | Epsom | 2024 |
| Aspect Nature Reserve Limited | Epsom | 2025 |
| Aspenarb Limited | Guildford | 2015 |
| Aspenden Farming Ltd | Royston | 2018 |
| Aspenden Hall Farm Limited | Letchworth Garden City | 1978 |
| Aspire Equine Limited | Newbury | 2022 |
| Aspire Growth Limited | Narberth | 2018 |
| Aspire Tree and Vegetation Management Ltd | Maidstone | 2025 |
| Aspley Enterprises Limited | Stafford | 2004 |
| Asset Stud Ltd | Norwich | 2021 |
| Assington Fruits Limited | Sudbury | 2005 |