Company Index
- N D T Kenged - Hamilton
- N I C C Ltd. - Blairgowrie
- Nalco Energy Services Ltd - Southampton
- NALCO Ltd - Aberdeen
- NALCO Ltd - Doncaster
- Namron (Aqua Products) Ltd. - Rotherham
- National Oilwell UK Ltd - Aberdeen
- National Oilwell Varco UK Ltd - Aberdeen
- National Starch & Chemical Ltd. - Goole
- Nayler Chemicals Ltd - Wigan
- Nbs Biologicals Ltd. - Huntingdon
NCB Marking Equipment Ltd - Evesbatch
- Neptune Oceanographics - Chipping Norton
- Neptune Sonar Ltd. - Driffield
- NERO Pipeline Connections Ltd - Oldbury
- Nessco Ltd - Aberdeen
- Net-Tex Agricultural Ltd - Gravesend
- Netzsch Pumps Ltd - Aldridge
- New Era Oil (UK) Ltd - London
- New Guard Coatings Ltd. - Wetherby
- New Metals & Chemicals Ltd. - Waltham Abbey
- New Tech Lubes Ltd. - Worksop
- Newbury Investments (U K) Ltd (Aberdeen) - Aberdeen
- Newgate Simms Ltd. - Chester
- Newlin Oil - Lincoln
- Newmyer Dawn Ltd. - Wimborne
- Newpak Products - Newcastle
- NGK Berylco (UK) Ltd - Salford
- Nichem Ltd. - Newtownards
- Nicholson Solutions Ltd - Aberdeen
- Nielsen Chemicals - Swadlincote
- Nikon UK Ltd (Industrial Instruments Division) - Kingston upon Thames
- NIM Engineering Ltd - Newcastle upon Tyne
- Nippon Gohsei Uk Ltd. - Hull
- Nippon Oil Exploration UK Ltd - London
- Nixon Flowmeters Ltd. - Cheltenham
- NMC (UK) Ltd - Tredegar
- Noble Asset (UK) Ltd - Aberdeen
- Noble Denton Consultants Ltd. - London
- Noble Energy (Europe) Ltd. - Sevenoaks
- Noble Fuels - Yarm
- Nomix Enviro - Andover
- Non-Destructive Inspection Services Ltd - Witney
- Norbar Torque Tools Ltd - Banbury
- Norbrook Laboratories Ltd. - Newry
- Norcon (Norris) Ltd - Haywards Heath
- Norgine Ltd - Pontypridd
- Norit UK Ltd - Glasgow
- Norkem Holdings Plc - Knutsford
- Norse Ltd. - Aberdeen
- Norson Group Ltd. - Aberdeen
- North East Chemicals Ltd. - Gateshead
- North East Rig-Out Ltd. - Aberdeen
- North Offshore Ltd. - Aberdeen
- North Sea Lifting Ltd. - Aberdeen
- Northants Leather Chemicals Ltd. - Northampton
- Northern Ireland Oil Industry Marketing Committee - Newtownards
- Northern Offshore Federation - Washington
- Northrop Grumman Sperry Marine - New Malden
- Norver Paints Ltd. - Heckmondwike
- Nova Hydraulics Ltd. - Aberdeen
- Nowcasting International - Ennis
- Npl Management Ltd. - Teddington
- Ntcducting Com Ltd. - Swansea
- Nufarm U K Ltd. - Belvedere
- Nufins Ltd. - Washington
- Nynas Naphthenics Ltd. - Warrington
