| A T J Contractors Limited | Stafford | 2008 |
| A T Robson Limited | Morpeth | 2023 |
| A T V Applications Ltd | Driffield | 2018 |
| A T Weaving Agricultural Contracting Limited | Exeter | 2011 |
| A Taste of Scotland Limited | Durham | 1984 |
| A to B Equine Services Ltd | Church Stretton | 2024 |
| A to Z Tree Service Ltd | Birmingham | 2023 |
| A Transiçao Verde Ltd | London | 2023 |
| A Vale (UK) Limited | Swanley Village | 2004 |
| A VON Dinther Farrier Service Limited | Whitchurch | 2011 |
| A W Bayne Plant Hire Limited | Banchory | 2007 |
| A W D Farms Ltd | North Walsham | 2022 |
| A W Equine Housing Ltd | Halifax | 2018 |
| A W George Agriculture Limited | Haverfordwest | 2025 |
| A W Gilman & Sons Limited | Ashbourne | 2002 |
| A W Hardwick & Sons Limited | Scarborough | 2012 |
| A W Marine Trading Ltd | Neath | 2022 |
| A W Utility Contracting Ltd | Tonbridge | 2024 |
| A Walsh Services Limited | Gwent | 2003 |
| A Wiseman & Sons Ltd. | Inverness | 2012 |
| A&A Cucumbers Limited | Birchington | 2008 |
| A&A UK Holding Limited | Birchington | 2008 |
| A&A UK Investments Limited | Birchington | 2007 |
| A&A Woods Works Ltd | Sittingbourne | 2025 |
| A&B Tree Services Ltd | Pontypool | 2017 |
| A&D Farms (Southern) Limited | Crowborough | 2018 |
| A&D Farms Ltd | Newry | 2011 |
| A&G Land Holdings Ltd | Wirral | 2024 |
| A&H Farmco Limited | Manchester | 2026 |
| A&I Evans Limited | Carmarthen | 2012 |
| A&J Homestead Company Ltd. | Rotherham | 2023 |
| A&J Pritchard&Son CYF. | Deeside | 2023 |
| A&Jfields Ltd | Cardiff | 2025 |
| A&K Forestry and Nature Ltd | Woodbridge | 2023 |
| A&L Agricultural Ltd | Strabane | 2025 |
| A&L Walling Limited | Preston | 2022 |
| A&M Dinev Ltd | Maidenhead | 2024 |
| A&M Farming Ltd | Chatteris | 2023 |
| A&M Woodland Limited | Market Harborough | 2025 |
| A&M&N Ltd | Spalding | 2018 |
| A&R Bark Park Ltd | Kingswood | 2024 |
| A&S Biodiversity Alliance Limited | Solihull | 2025 |
| A&S Farms Ltd | Donemana | 2020 |
| A&S Food Group Limited | Croydon | 2020 |
| A&S Growers | Rochester | 2019 |
| A&T Tree Services Limited | Birmingham | 2019 |
| A&Z Farm (Lincoln) Limited | London | 2022 |
| A, D & a Richardson Limited | Cumbria | 2006 |
| A-Z Tree Services Ltd | Doncaster | 2025 |
| A-Z Universal Limited | Dundee | 2024 |
| A. & B. White (Frinkley) Limited | Grantham | 1990 |
| A. & E. G. Heading Limited | Bury St Edmunds | 1953 |
| A. & G. Layton & Sons Limited | York | 1974 |
| A. & H. Wylie Limited | Droitwich | 1965 |
| A. & J. Mcdowall Limited | North Berwick | 1958 |
| A. & J. Shedden Limited | Lochgelly | 1963 |
| A. & R. Brownlie Limited | East Lothian | 1996 |
| A. & S. Gimson Ltd | Bury St Edmunds | 1999 |
| A. & W. Helliwell & Sons Limited | Sheffield | 1973 |
| A. B. Potatoes Ltd | Kilkeel | 2013 |
| A. Binns & Co Limited | Colne | 2008 |
| A. Burnfield & Sons Limited | Hants | 1956 |
| A. C. Brown (Farms) Limited | Brechin | 1955 |
| A. Carmichael (Farmers) Limited | Berwick-Upon-Tweed | 1961 |
| A. Clark (Trunch) Limited | North Walsham | 1970 |
| A. Cleasby Limited | Manchester | 1960 |
| A. E. Lenton (Estates) Limited | Spilsby | 1954 |
| A. E. Riding Limited | Jedburgh | 2016 |
| A. Edgley Limited | Cambridgeshire | 2003 |
| A. F. Machinery Limited | Thetford | 1990 |
| A. Farrell Contracting Ltd | Norwich | 2019 |
| A. Forsyth(Farmwork)Limited | | 1966 |
| A. G. Porter & Sons Limited | Arbroath | 1962 |
| A. G. Waugh and Sons Limited | Morpeth | 1962 |
| A. H. Clark (Farms) Limited | Spalding | 1961 |
| A. H. Warren Trust Limited | Crewkerne | 1991 |
| A. H. Worth (Fosdyke) Limited | Spalding | 1988 |
| A. Hanson Limited | Doncaster | 1952 |
| A. Hargreaves Limited | Clitheroe | 1957 |
| A. Hill & Sons Limited | Middlesbrough | 2002 |
| A. Hinge & Sons Limited | Sittingbourne | 1942 |
| A. Hingley & SON (Timber) Limited | Belper | 1973 |
| A. J. Davenhill Limited | Crewe | 2004 |
| A. J. Shuttleworth (Farriers) Ltd | Blackburn | 2005 |
| A. K. Limb (Produce) Limited | Old Leake | 1961 |
| A. K. Lowrey Limited | Tyne & Wear | 1997 |
| A. L. Sayers (Holbeton) Limited | Plymouth | 1960 |
| A. Lochhead Fishing Company Limited | Newton Stewart | 2007 |
| A. Macgregor (Allanfauld) Limited | Glasgow | 1991 |
| A. Marshall Tree Services Limited | Glasgow | 2015 |
| A. Mccrea and Sons Farms Ltd | Stewartstown | 2012 |
| A. Moor & Sons Limited | Lincoln | 2008 |
| A. N. Waters Limited | Sevenoaks | 1977 |
| A. Norcross & SON Limited | Newark | 1975 |
| A. Olorenshaw Limited | Coventry | 1998 |
| A. P. T. Farming Limited | Colchester | 1947 |
| A. Parsonson Limited | Lincolnshire | 2004 |
| A. Pearson & Co. Limited | Chesterfield | 1954 |
| A. Picton & Sons (Haydock) Limited | Warrington | 1965 |
| A. Poucher and Sons (Bardney Dairies) Limited | Lincolnshire | 1978 |