Clients
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| NACCO Materials Handling (NI) Ltd | Napier University | National Library of Scotland |
| National Radiological Protection Board | Nestle UK | Newcastle City Council |
| Newcastle United Football Club | NHS Scotland | Nissan UK |
| Nissan Yamoto Engineering Ltd | North Tyneside Council | Northampton County Council |
| Northern Bank Ltd | Northern Ireland Electricity | Northern Ireland Railways Co Ltd |
| Northern Rock | Northumberland County Council | Northumbria Police Authority |
| Northumbria University | Nortel | Norton House Hotel |