| Naturally Trees Ltd | Hungerford | 2019 |
| Nature Based Ltd | London | 2025 |
| Nature Based Solution Entrepreneur Ltd | Bolton | 2026 |
| Nature Capital Partners Ltd | Farnham | 2024 |
| Nature First Limited | Gloucester | 1993 |
| Nature Friendly Farming Network Limited | St Neots | 2018 |
| Nature Harmony Limited | Southall | 2020 |
| Nature Immersions Ltd | Holsworthy | 2019 |
| Nature Impact (Kensham) Ltd | Reigate | 2024 |
| Nature Impact (Skinners) Ltd | Reigate | 2024 |
| Nature Impact (Wrotham) Ltd | Reigate | 2025 |
| Nature Island Nursery Ltd | Ventnor | 2026 |
| Nature Recovery Farming Ltd | London | 2021 |
| Nature Restoration Limited | Skipton | 2023 |
| Nature Solutions Ltd | Scalloway | 2025 |
| Nature Studio Ltd | Crawley | 2021 |
| Nature's Call Limited | Port Talbot | 2023 |
| Nature's Curators Ltd | Bideford | 2018 |
| Nature's E.C.H.O. Ltd | 139 Fountainbridge | 2019 |
| Nature's Nest Highland Ltd | Nairn | 2024 |
| Nature's Way Farm Ltd | Scunthorpe | 2026 |
| Naturearb Ltd | Andover | 2025 |
| Naturenurture.Education CIC | Caerphilly | 2023 |
| Natureprosperity Ltd | Drumnadrochit | 2026 |
| Naturerise Ltd | Derby | 2026 |
| Natures Crops International Limited | York | 2004 |
| Natures Hope Holdings Ltd | Lichfield | 2023 |
| Natures Retort Ltd | Dalry | 2024 |
| Natures Scientific Limited | Croydon | 2018 |
| Natures Way PCF Limited | Eastbourne | 2026 |
| Naturescape Limited | Langar | 2004 |
| Naturewise Community Forest Garden C.I.C. | Cardigan | 2017 |
| Naturezones Wildlife Education Trust | Isle Of Wight | 2007 |
| Nature’S Creations Limited | Portsmouth | 2019 |
| Naturra Livefoods Ltd | Durham | 2025 |
| Natus Energy Ltd | Bury St Edmunds | 2023 |
| Naughton Castle Garden Limited | Dundee | 2002 |
| Naughton's Green Future Limited | London | 2023 |
| Naughty NAG Solutions Limited | Coventry | 2022 |
| Nautical Blue Swing Limited | Cardiff | 2025 |
| Nautical Marine Solutions Ltd | Hartfield | 2025 |
| Naverlode Limited | Lincoln | 1996 |
| Navigate Eco Solutions Limited | Chester | 2021 |
| Navmar International Ltd | Hull | 2026 |
| Navy (Eco) Ltd | Derby | 2021 |
| Nawiri Ltd | Cambridge | 2026 |
| Nayland Meadow Limited | Colchester | 2004 |
| Naylor Farms Limited | Fraserburgh | 2008 |
| Naylor Flowers Limited | Spalding | 2015 |
| Naze Lamb Limited | Walton On The Naze | 2019 |
| NB (Seed Processors) Limited | Sleaford | 1979 |
| NB Agri Ltd | Doncaster | 2020 |
| Nboc Group Ltd | London | 2022 |
| NC (Scotland) Limited | Aberdeen | 2017 |
| NC Farming Limited | Swindon | 2009 |
| NC Fisheries Limited | Billericay | 2009 |
| Ncap 22 Limited | Colchester | 2022 |
| NCC1702 Ltd | London | 2013 |
| NCH Garden Services Ltd | Birmingham | 2026 |
| NCM Services Limited | Selby | 2018 |
| Ncontracts Ltd | Armadale | 2020 |
| Ncpf Limited | Peterborough | 2015 |
| Ncubbe Services Limited | Birmingham | 2025 |
| Ndiangang & Company Ltd | Nottingham | 2025 |
| Ndlovu Limited | Haywards Heath | 2003 |
| NE James Pressure Washing Services Limited | Llandrindod Wells | 2014 |
| NE Plant Ltd | Hartlepool | 2017 |
| Neale Farms Limited | Belper | 1985 |
| Nealestone Farms Limited | Haverhill | 1933 |
| Neamour Holdings Limited | London | 2019 |
| Neamu Transport Limited | Stoke-On-Trent | 2015 |
| Near Cloughside Farm Ltd | Hyde | 2026 |
| Near Howe Limited | Penrith | 2020 |
| Nearcast Limited | St Neots | 1976 |
| Nearctic Bloodstock Limited | Newmarket | 2023 |
| Neasham Nurseries Ltd | Darlington | 2008 |
| Neatham Limited | Chorley | 2018 |
| Neaveford Limited | Kettering | 1978 |
| Neaverson Growers Limited | King'S Lynn | 2017 |
| Nebo Woodland Company Ltd | Caernarfon | 2022 |
| Nebula AI Solutions Ltd | London | 2026 |
| Nechtansmere Farming Company Ltd | By Forfar | 2008 |
| NECTAR2HONEY Solutions Limited | Leeds | 2025 |
| Necton Farms Limited | Norfolk | 1953 |
| Nedex Ltd | York | 2010 |
| NEE Plant & Groundworks Ltd | Harlow | 2019 |
| Need's Farm Flowers Limited | Horsham | 2025 |
| Needham Chalks Ltd | Ashford | 2026 |
| Needham Fibden Farm Limited | Droitwich | 1998 |
| Needhams of Elmley Limited | Near Droitwich | 1949 |
| Needwood Forest Foods Limited | Burton-On-Trent | 2004 |
| Needwood Poultry Limited | Burton Upon Trent | 2005 |
| Neemco Limited | Alexandria | 1994 |
| Neen House Livery Ltd | Wombourne | 2017 |
| Neesham Farms Limited | Lincoln | 1980 |
| Nefbm Ltd | South Shields | 2026 |
| Neigh Bother (Scotland) Ltd | Falkirk | 2024 |
| Neigh-Bores Limited | Barmouth | 2007 |
| Neil Hardy Aquatica Limited | Carshalton | 1982 |
| Neil L. Ramsay Limited | Stranraer | 1997 |