| Nadarratech Ltd | Edinburgh | 2024 |
| Nadder Ridge Farm Ltd | Exeter | 2021 |
| Nadia and Cats Ltd | London | 2024 |
| Naeini Investments Limited | Keymer | 2021 |
| Nafferton Wold Farms Limited | Driffield | 1996 |
| Naghan Limited | Downpatrick | 2004 |
| Nail-On Company Limited | Tenterden | 2001 |
| Nailed IT Farriery Ltd | Burnham-On-Sea | 2022 |
| Nails and Buty Womwn Ltd | London | 2025 |
| Nails Pedi Ltd | London | 2025 |
| Naipak Limited | Ilford | 2025 |
| Nairn Enterprises Ltd | Nairn | 2022 |
| Naish Farms Limited | Newark | 1977 |
| Najd Stud Limited | Cambridge | 2020 |
| Nakambe Wildlife Reserve Limited | Bordon | 2025 |
| Naked Clam Ltd | Cambridge | 2023 |
| Naked Farmer Limited | Peterborough | 2006 |
| Nallhead Stables Limited | Feltham | 2016 |
| Namara Projects Ltd | North Uist | 2012 |
| Namens Leases Farm Limited | Barnard Castle | 1973 |
| Namron Engineering Ltd. | Banff | 2009 |
| Nancy BEE Ltd | Brighton | 2021 |
| Nanhoron Farms Limited | Gwynedd | 2002 |
| Nankivell & Sons Limited | Bodmin | 2015 |
| Nannakola Ltd | Cambridge | 2025 |
| Nanny Sharon's Alpaca Farm Prenton C.I.C. | Prenton | 2022 |
| Nans Food Ltd | Luton | 2022 |
| Nant Helyg Farm Ltd | London | 2021 |
| Nant Lechog CYF | Bae Colwyn | 2019 |
| Nant YR Allor Limited | Port Talbot | 2020 |
| Nant-Y-Cwm Community Group Ltd | Kilgetty | 2004 |
| Nantclwyd Farms | Peterborough | 1979 |
| Nantodd Properties Ltd | Preston | 2017 |
| Nantycastell Farm Ltd | Llanfyrnach | 2025 |
| Nantyglo Action Group (NAG) | Ebbw Vale | 2006 |
| Nantygragen Ltd | Llandysul | 2020 |
| Nantyrhafod Limited | Newtown | 2019 |
| Naomi's Aesthetics & Training Ltd | Lydney | 2025 |
| Napchester Farriers Ltd | Barnet | 2014 |
| Napchester UK Ltd | Herts | 2023 |
| NAR Valley Farms Limited | Fakenham | 2009 |
| NAR Valley Pigs Limited | Swaffham | 2019 |
| Narborough & Littlethorpe Leisure Gardeners CIC | Leicester | 2019 |
| Narborough Plantations Limited | Halesowen | 1910 |
| Narlah Farm Limited | London | 2020 |
| Narlows Farm Livery Limited | Spondon | 2019 |
| Naroques UK Limited | London | 2019 |
| Narstate Limited | Norfolk | 1979 |
| Naseby Bloodstock Limited | Norwich | 2013 |
| Naseby Reservoir Carp Fishery Limited | Leicester | 2024 |
| Naseem Agri Farm Limited | Mitcham | 2009 |
| Naslina Industries Limited | London | 2024 |
| Nasoo Farms (NI) Ltd | Bangor | 2018 |
| NAT Contractors Ltd | Wakefield | 2025 |
| Natalma Bloodstock Limited | Newmarket | 2019 |
| Natfarm Limited | Lancaster | 1979 |
| Nathan Collings Limited | Hungerford | 2022 |
| National Bovine Data Centre Ltd | Telford | 2016 |
| National Canopy Ltd | Shrewsbury | 2023 |
| National Coppice Federation | Skipton | 2013 |
| National Fishery Services Ltd | Helston | 2018 |
| National Livestock Management Database Limited | Minehead | 2004 |
| National Milk Records Limited | London | 1997 |
| National PIG Association | Kenilworth | 1999 |
| National Stud Limited | Suffolk | 2007 |
| National Tortoise Sanctuary | Tunbridge Wells | 2025 |
| Nationwide Agricultural Drone Services Ltd | Cheltenham | 2023 |
| Native Aqua Ltd | Dundee | 2023 |
| Native Breeds Limited | Kenilworth | 2010 |
| Native British Lamb 365 Limited | Carlisle | 2025 |
| Native Forest Ltd | Chiddingfold | 2024 |
| Native Forestry Limited | Northampton | 2018 |
| Native Gardens & Forestry Limited | Woodbridge | 2011 |
| Native Honey Bees Limited | London | 2020 |
| Native Marine Centre Ltd | Poundbury | 2012 |
| Native Pony Limited | Chiddingly | 2024 |
| Natoora Farming UK Limited | London | 2020 |
| Natsilane Ltd | Plymouth | 2023 |
| Nattergal Limited | Norwich | 2021 |
| Natton House Thoroughbreds Limited | Tewkesbury | 2004 |
| Natura Land Holdings Ltd | Prestwich | 2022 |
| Natura Revelata Limited | Sunderland | 2020 |
| Natural Backs Limited | Biggin Hill | 2002 |
| Natural Balance Dog Training Ltd | Weymouth | 2011 |
| Natural Education Works C.I.C. | Wells | 2025 |
| Natural Farm Produce Limited | Portsmouth | 2018 |
| Natural Farma Ltd | Derby | 2017 |
| Natural Farmer Ltd | Ventnor | 2019 |
| Natural Fibre Research & Innovation Ltd | Carnforth | 2024 |
| Natural Fibre TEX Limited | Mirfield | 2011 |
| Natural Greens Farm Ltd | London | 2019 |
| Natural Pharma Holding Ltd | London | 2016 |
| Natural Progress Limited | High Wycombe | 2019 |
| Natural Selections Limited | Essex | 2001 |
| Natural Synergy Credits Ltd | London | 2025 |
| Natural Synergy Ltd | Princes Risborough | 1998 |
| Natural Wagyu Limited | Carmarthen | 2014 |
| Natural Waste Management Limited | Armagh | 2008 |
| Naturally for Pets Ltd | Pontypridd | 2023 |
| Naturally Limited | Cambridge | 2025 |