| Pestforce Hertfordshire Limited | Bishop'S Stortford | 2019 |
| Pestforce Northumberland Limited | Morpeth | 2023 |
| Pestforce ST Albans Limited | Bishop'S Stortford | 2020 |
| Pestguard North West Cheshire Limited | Crewe | 2016 |
| Pestguard Northwest Chester Ltd | Chorley | 2023 |
| Pestguard Northwest Leicestershire Ltd | Leicester | 2023 |
| Pesticide Applicator Testing Limited | Grantham | 2013 |
| Pests Away Ltd | Tadworth | 2017 |
| Pests Birds & Bugs Limited | Ringwood | 2016 |
| Pests Solution Ltd | Cardiff | 2022 |
| Pestxpress Ltd | Watford | 2025 |
| Pet Accessories Ltd | Colchester | 2014 |
| Pet Central Hotel (Cattery) Ltd | Redditch | 2010 |
| Pet Central Hotel (Kennels) Ltd | Redditch | 2010 |
| Pet Cuddles Happy Hounds Ltd | Reading | 2025 |
| Pet Education Training Solutions Ltd | Ballynahinch | 2015 |
| Pet Pals R US Ltd | Ammanford | 2022 |
| Pet Park London Limited | Cheadle | 2020 |
| Pet Planet Global Alliance | Cambridge | 2025 |
| Pet Solutions Ltd | Leeds | 2019 |
| Pet Suppawt Limited | Wimborne | 2020 |
| Petallica Flower Farm C.I.C. | Swansea | 2021 |
| Petary Ltd | March | 1998 |
| Petch Farms Ltd | Middlesbrough | 2011 |
| Petches Farm Ltd | Braintree | 2013 |
| Pete Gledhill Ltd | Gatwick | 2022 |
| Pete Mellor Limited | Burton-On-Trent | 2004 |
| Pete Norris Limited | Newark | 2004 |
| Peter & J.Johnstone Limited | | 1963 |
| Peter & Sarah Phillips Limited | Haverfordwest | 2013 |
| Peter Beckey Landscaping Ltd | Martock | 2014 |
| Peter Bell Farm Cleaning Services Limited | Immingham | 2003 |
| Peter Booth Trees Limited | Salisbury | 2021 |
| Peter Brand Farms Limited | Sudbury | 1991 |
| Peter Briggs Farms Ltd | Preston | 2025 |
| Peter C Grewar (Potatoes) Limited | Perthshire | 1977 |
| Peter C. Thorold Limited | Spalding | 1999 |
| Peter Clemson & Sons Limited | Larkhall | 1936 |
| Peter Coombs Gardens Limited | Radstock | 1976 |
| Peter COX (Farms) Limited | Sandy | 1974 |
| Peter Crosswell Agricultural Ltd | Winchester | 1999 |
| Peter Davies (Felincoed) Limited | Llandovery | 2019 |
| Peter Davies Agricon Limited | Swansea | 2006 |
| Peter Eastwood Plants Limited | Ditchling Hassocks | 1986 |
| Peter Farmer (Bitteswell) Limited | Leicester | 1996 |
| Peter Frizzell Ltd | Colchester | 2012 |
| Peter G Ltd | London | 2023 |
| Peter G Smith (Soil Nutrient Systems) Ltd | Stratford Upon Avon | 2006 |
| Peter Hall & Sons Limited | Kent | 1997 |
| Peter Hawkey Limited | Truro | 2015 |
| Peter Highwood Limited | Tonbridge | 1951 |
| Peter Hughes Farm Enterprise Limited | Newry | 2015 |
| Peter Hunter Limited | Crewe | 2005 |
| Peter Ives Limited | Dorchester | 1964 |
| Peter J Stirling Limited | Halbeath, Dunfermline | 2014 |
| Peter J.Perkins & Co.Limited | Newport | 1958 |
| Peter John Gould Agronomy Ltd | Wareham | 2023 |
| Peter L Harrison Trading Limited | Liverpool | 2014 |
| Peter Lamb Limited | Salisbury | 1988 |
| Peter Lambert Crop Consultancy Limited | Halifax | 2005 |
| Peter Lankfer Limited | King'S Lynn | 2007 |
| Peter Mcarthur Limited | Perth | 2024 |
| Peter Merron and SON Limited | Portaferry | 2010 |
| Peter Moore Trading Company Limited | Liverpool | 2014 |
| Peter Moulds Farmers Limited | Lincoln | 1969 |
| Peter Nott & SON Limited | Sudbury | 2008 |
| Peter Onslow Limited | Preston | 2000 |
| Peter Pitman Limited | Arundel | 2005 |
| Peter Quinn & Company Limited | Newry | 2012 |
| Peter Rhodes Feed Services Limited | North Yorkshire | 2006 |
| Peter Rood and SON Limited | Somerton | 1959 |
| Peter Ross Ltd | London | 2020 |
| Peter Rustic House Ltd | Leighton Buzzard | 2019 |
| Peter Schofield Limited | York | 2012 |
| Peter Smart Contracting Limited | Nairn | 2014 |
| Peter Smith (Farms) Limited | Staffordshire | 1963 |
| Peter Smyth International Sports Horses Ltd | Strabane | 2014 |
| Peter Steel Equine Therapy Limited | Stonehaven | 2016 |
| Peter Strawson Limited | Grimsby | 1962 |
| Peter Taylor (Oldcotes) Limited | Blyth | 1953 |
| Peter Taylor Produce Limited | Blyth Worksop | 1951 |
| Peter Till Farms Ltd | Stafford | 2024 |
| Peter Vergette Limited | Hull | 1985 |
| Peter Watson Jones Limited | Newport | 1961 |
| Peter White & Company Ltd | Eyemouth | 2020 |
| Peter Wickham Limited | Kent | 1986 |
| Peter Willox Ltd. | Fraserburgh | 2007 |
| Peter's Field Products Limited | Muir Of Ord | 2014 |
| Peterhead Fishermen NET Manufacturers Limited | Peterhead | 1996 |
| Peterkin Herds Limited | Cheltenham | 1958 |
| Peterley Manor Farm Limited | Buckinghamshire | 2022 |
| Peters Agricultural & Groundworks Ltd | Towcester | 2025 |
| Petersfarm Limited | Kirkby Moorside | 2001 |
| Petersons Farm Produce Ltd | London | 2021 |
| Peterston Tea Limited | Cardiff | 2023 |
| Petflex Limited | Dunmow | 2025 |
| Petiole Ltd | Peterborough | 2017 |
| Petit Baddow Vineyard & Farm Ltd | Chelmsford | 2026 |
| Petit Paws Limited | Leighton Buzzard | 2023 |
| Petite Paws Daycare Limited | Leamington Spa | 2025 |