| National Australia Bank Limited | NATAGB2L | 1 code |
| National Bank Financial Inc. | NBFNGB2L | 1 code |
| National Bank Of Canada | BNDCGB2L | 1 code |
| National Bank Of Egypt (uk) Limited | NBEGGB2L | 1 code |
| National Bank Of Kuwait (international) PLC | NBOKGB2L | 2 codes |
| National Counties Building Society | NCBSGB21 | 1 code |
| National Counties Building Society | NCBSGB22 | 1 code |
| National Farmers Insurance Society Ltd | NFUMGB21 | 1 code |
| National Gas Transmission PLC | GTGMGB2L | 2 codes |
| National Grid PLC | NGRDGB2L | 3 codes |
| National Limited | WESOGB22 | 1 code |
| National Merchant Bank House PLC | NMBHGB21 | 1 code |
| National Savings And Investments | NSAIGB2L | 1 code |
| National Savings And Investments | NSAIGBL1 | 1 code |
| National Westminster Bank PLC | NWBKGB21 | 1276 codes |
| National Westminster Bank PLC | NWBKGB2L | 13 codes |
| National Westminster Bank PLC | NWBKGB2X | 1 code |
| National Westminster Bank PLC | NWBKGB3C | 1 code |
| National Westminster Bank PLC | NWBKGB3L | 1 code |
| National Westminster Bank PLC | NWBKGB4E | 1 code |
| National Westminster Bank PLC | NWBKGB55 | 1 code |
| National Westminster Bank PLC | NWBKGBCE | 1 code |
| National Westminster Bank PLC | NWBKGBCH | 1 code |
| National Westminster Bank PLC | NWBKGBX1 | 1 code |
| National Westminster Bank PLC | NWBXGB22 | 1 code |
| National Westminster Bank PLC | NWPLGB2L | 1 code |
| National Westminster Bank PLC | ULSBGB2B | 2 codes |
| Nationwide | NAIAGB21 | 1 code |
| Nationwide Building Society | CLYDGB21 | 389 codes |
| Nationwide Building Society | CLYDGB2S | 12 codes |
| Nationwide Building Society | CLYDGBCH | 1 code |
| Nationwide Building Society | NABSGB21 | 1 code |
| Nationwide Building Society | NBSMGB22 | 1 code |
| Nationwide Building Society | NRNBGB2L | 12 codes |
| Nationwide Building Society | YORKGB21 | 303 codes |
| Nationwide Building Society | YORKGB22 | 2 codes |
| Natixis | CMLBGB21 | 1 code |
| Natixis | LBNPGB21 | 1 code |
| Natixis Axeltis Limited | AXETGB21 | 1 code |
| Natixis Investment Managers UK Limited | LOSEGB21 | 1 code |
| Natixis London Branch | NATXGB2L | 2 codes |
| Natwest Markets N.v. London Branch | RBOSGB22 | 4 codes |
| Natwest Markets Public Limited Company | NATGGB21 | 1 code |
| Natwest Markets Public Limited Company | RBOSGB2R | 10 codes |
| Natwest Securities Hong Kong Limited | WNWSGB21 | 1 code |
| Natwest Securities Hong Kong Ltd | NWSAGB21 | 1 code |
| Natwest Stockbrokers Limited | NWSBGB21 | 1 code |
| Naudapay Limited | NAUDGB22 | 1 code |
| Navro Payments Limited | NPEUGB22 | 1 code |
| Ncb Corporate Finance Ltd | NCCFGB21 | 1 code |
| Ncl Investments Limited | NCLIGB21 | 1 code |
| Ncm Fund Services Limited | NOPAGB21 | 1 code |
| Nean Wealth Advisors (uk) Limited | NEWAGB21 | 1 code |
| Nec Money Transfer Limited | NMTRGB22 | 1 code |
| Nedbank Ltd | NEDSGB2L | 1 code |
| Nedbank Office | FBLNGB2L | 1 code |
| Nedgroup Investments (uk) Ltd | NEDGGB2L | 1 code |
| Nemadi Advisors Limited | NEADGB21 | 1 code |
| Nemesis Asset Management LLP | FCCPGB21 | 1 code |
| Nemesis Asset Management LLP | NEAEGB21 | 1 code |
| Nestle Capital Management Ltd | NEATGB21 | 1 code |
| Nestle UK Ltd | NESLGB21 | 1 code |
| Nestle UK Pension Trust Ltd | NEPTGB21 | 1 code |
| Netwealth Investments Limited | NWILGB21 | 1 code |
| New Nigeria Bank Ltd. | NIBNGB21 | 1 code |
| New Wave Capital Limited | CTAPGB22 | 1 code |
| Newbridge International Limited | NEITGB21 | 1 code |
| Newbury Building Society | NBUSGB21 | 1 code |
| Newbury Building Society | NBUSGB22 | 1 code |
| Newcastle Building Society | NCLEGB21 | 1 code |
| Newcastle Building Society | NCLEGB2N | 1 code |
| Newgate Private Equity Limited | CATNGB21 | 1 code |
| Newpeak Capital LLP | NEPLGB21 | 1 code |
| Newscape Capital Group Ltd | EVCAGB21 | 1 code |
| Newton Follis Partnership Ltd, The | NEFPGB21 | 1 code |
| Newton Investment Management (north America) Limited | NECMGB21 | 1 code |
| Nexdi Ltd | JAMTGB22 | 1 code |
| Nexpay Limited | NEXYGB22 | 1 code |
| Nexus Corporate Finance Limited | NEFSGB21 | 1 code |
| Nexus Payments Limited | NEPEGB21 | 1 code |
| Nf Money Ltd | MOYEGB21 | 1 code |
| Nfu Mutual Investment Services Ltd | NMISGB21 | 1 code |
| Nfu Mutual Unit Managers Ltd | NMUMGB21 | 1 code |
| Nhs Credit Union Ltd | NHCUGB21 | 1 code |
| Nib Capital Bank N.v. | DNIBGB21 | 1 code |
| Nikko Asset Management Europe Ltd | NAMGGB21 | 1 code |
| Nikko Asset Management Europe Ltd | NGAMGB21 | 1 code |
| Nikko Asset Management Europe Ltd | NICNGB21 | 1 code |
| Nippon Credit International Ltd. | NICRGB21 | 1 code |
| Nippon Life Schroders Management Europe Limited | NDAMGB21 | 1 code |
| Nito (uk) Asset Management Limited | NIAMGB21 | 1 code |
| Nium Fintech Limited | NIFTGB22 | 1 code |
| Noble And Company | NOBCGB21 | 1 code |
| Noble And Company (uk) Limited | NOBEGB21 | 1 code |
| Noble Capital Limited | NECTGB21 | 1 code |
| Noble Clean Fuels Limited | NOCFGB21 | 1 code |
| Noble Grossart Limited | NOGRGB21 | 1 code |
| Nomad Foods Europe Limited | NFERGB22 | 1 code |
| Nomura Asset Management UK Limited | NAMLGB2L | 1 code |
| Nomura Bank International PLC | NBILGB2L | 1 code |
| Nomura Energy Marketing Ltd | NEMLGB21 | 1 code |
| Nomura International PLC | NOMAGB2L | 5 codes |
| Nomura International PLC | NOMAGB31 | 1 code |
| Nonghyup Bank London Branch | NACFGB2L | 1 code |
| Nordea Bank Abp London Branch | NDEAGB2L | 1 code |
| Nordpay Financial Limited | NOICGB21 | 1 code |
| North London Credit Union Limited | NLCUGB21 | 1 code |
| Northern Bank Executor And Trustee Co Ltd | NOETGB21 | 1 code |
| Northern Bank Limited | DABAGB2B | 325 codes |
| Northern Enterprise Ltd | NOENGB21 | 1 code |
| Northern Limited | NTGIGB21 | 1 code |
| Northern Retail Properties (general Partner) | NRPGGB21 | 1 code |
| Northern Trust Company, The | CNORGB21 | 1 code |
| Northern Trust Company, The | CNORGB22 | 8 codes |
| Northern Trust Company, The | CNORGB2Y | 51 codes |
| Northern Trust Global Investments | CNORGB2L | 1 code |
| Northern Trust Global Services Se UK Branch | CNORGB2X | 2 codes |
| Northern Trust Securities LLP | AVGLGB21 | 1 code |
| Northern Trust Securities LLP | AVGSGB21 | 1 code |
| Northland Capital Market Making | ASTPGB21 | 1 code |
| Northland Capital Partners Limited | COSYGB21 | 2 codes |
| Northlight Group LLP | NOGPGB21 | 1 code |
| Notesco UK Limited | SFEEGB21 | 1 code |
| Nottingham Building Society | NTBSGB21 | 1 code |
| Nottingham Building Society | NTBSGB2N | 1 code |
| Nottingham Building Society | NTBSGBN1 | 1 code |
| Notz Stucki (london) Ltd | NOSLGB21 | 1 code |
| Nova Capital Management Limited | LIDCGB21 | 1 code |
| Nova Finance Group Ltd | NVFCGB22 | 1 code |
| Novate Global Markets Limited | MTILGB2L | 1 code |
| Novatum Tech Limited | NOEHGB22 | 1 code |
| Noveba Limited | VEBAGB2L | 2 codes |
| Novia Financial PLC | NOFLGB21 | 1 code |
| Novia Financial PLC | NOFLGB31 | 1 code |
| Novia Global | NOGBGB21 | 1 code |
| Novum Private Clients Limited | LUSCGB21 | 1 code |
| Novum Securities Limited | NOEGGB21 | 1 code |
| Npj Asset Management LLP | NPAMGB21 | 1 code |
| Nplus1 Singer Advisory LLP | NPLUGB21 | 2 codes |
| Nplus1 Singer Capital Markets Limited | KSFCGB21 | 3 codes |
| Ns Partners Ltd | WORLGB21 | 1 code |
| Nsg UK Enterprises Limited | NSGEGB22 | 1 code |
| Nu Currencies Limited | CNREGB21 | 1 code |
| Nucleus365 Limited | NUCEGB22 | 1 code |
| Nufcor International Limited | NUITGB21 | 1 code |
| Numis Securities Limited | NUSEGB21 | 1 code |
| Numis Securities Limited | NUSEGB22 | 1 code |
| Nutmeg Saving And Investment Limited | HUFIGB21 | 1 code |
| Nutmeg Saving And Investment Ltd | NUSIGB21 | 1 code |
| Nuveen Administration Limited | NREMGB2L | 1 code |
| Nuvei Financial Services Limited | NUVEGB22 | 1 code |
| Nvayo Limited | NVAYGB21 | 1 code |
| Nvm Pe Limited | NOVMGB21 | 1 code |
| O3 Fincoop PLC | OFINGB21 | 1 code |
| Oakland Investment Management Ltd | OAIMGB21 | 1 code |
| Oaknorth Bank PLC | OAKNGB22 | 1 code |
| Oaknorth Bank PLC | OAKNGB23 | 1 code |
| Oaktree Capital Management Ltd | OACMGB21 | 1 code |
| Oanda Europe Ltd | OAUUGB21 | 1 code |
| Oasis Capital Group PLC | OAAGGB21 | 1 code |
| Oasis Capital Markets Ltd | OACKGB21 | 1 code |
| Oasis Europe Limited | OAEUGB21 | 1 code |
| Obconnect Limited | OBCNGB22 | 1 code |
| Oberon Investments Limited | BADNGB21 | 1 code |
| Oceanwood Capital Management LLP | OCGLGB21 | 1 code |
| Oceanwood Capital Mngt Ltd | OCCNGB21 | 1 code |
| Ocorian (uk) Limited | OCORGB2L | 1 code |
| Ocs Group Holdings Limited | OCSGGB2L | 1 code |
| Octopus Asset Management Ltd | OCAMGB21 | 1 code |
| Octopus Capital Limited | OCCAGB22 | 1 code |
| Octopus Capital Limited | OCCAGB2L | 1 code |
| Octopus Investments Limited | OCINGB21 | 1 code |
| Octopus Ventures Limited | KAVEGB21 | 1 code |
| Odey Asset Management LLP | OAALGB21 | 1 code |
| Odey Asset Management Ltd. | ODEYGB21 | 1 code |
| Odl Securities | ODSEGB21 | 1 code |
| Oechsle International Advisors Ltd | OEIAGB21 | 1 code |
| Ogury Limited | OGURGB2L | 1 code |
| Ohentpay UK Limited | OHNTGB22 | 1 code |
| Oi Brasil Finance Limited | OIBFGB21 | 1 code |
| Oil Brokerage Ltd | OIBRGB21 | 1 code |
| Old Mission Europe LLP | OMELGB21 | 1 code |
| Old Mutual | OMGTGB21 | 1 code |
| Old Mutual Wealth Limited | OLMWGB21 | 1 code |
| Old Mutual Wealth Limited | SKMUGB21 | 1 code |
| Old Mutual Wealth Limited | SKMUGB2A | 1 code |
| Old Park Lane Capital PLC | OPLCGB21 | 1 code |
| Oldfield Partners LLP | OLPLGB21 | 1 code |
| Olim Ltd | OLIMGB21 | 1 code |
| Olivetree Financial Limited | OLVTGB21 | 1 code |
| Olliff And Partners PLC | OLLIGB21 | 1 code |
| Omanye Limited | OMAYGB21 | 1 code |
| Omega Baap Limited | OMBPGB22 | 1 code |
| Omni Event Management Limited | OMEAGB22 | 1 code |
| Omni Partners LLP | OMPLGB21 | 1 code |
| Omnia Asset Management Ltd | OMAAGB21 | 1 code |
| Omnicom Finance Limited | OMNCGB2L | 4 codes |
| Ondra LLP | ONLLGB21 | 1 code |
| One Money Mail Limited | ONMMGB22 | 1 code |
| One.io UK Limited | RRCCGB22 | 1 code |
| Onesavings Bank PLC | KENTGB21 | 1 code |
| Onesavings Bank PLC | KENTGB22 | 1 code |
| Onslow Capital Management Ltd | ONCMGB21 | 1 code |
| Opal Transfer Ltd | OPTRGB21 | 1 code |
| Openax Limited | OPEXGB22 | 1 code |
| Openax Limited | OPEXGB2L | 1 code |
| Openxccess Limited | OPECGB22 | 1 code |
| Oppenheimer Europe Ltd | OPPHGB21 | 1 code |
| Optim System Ltd | OPSYGB22 | 1 code |
| Optimal Currency Ltd | OPCUGB22 | 1 code |
| Optimum Asset Management Ltd | OPAMGB21 | 1 code |
| Optimum Investment Management Limited | GRTFGB21 | 1 code |
| Optimus Capital LLP | PVIHGB21 | 1 code |
| Optimus Cards UK Limited | OPCDGB22 | 1 code |
| Optiva Securities Limited | ORBSGB21 | 1 code |
| Optiva Securities Limited | SETRGB21 | 1 code |
| Optiver UK Trading Limited | OPTAGB22 | 1 code |
| Orange Scissors Ltd | AGIMGB21 | 1 code |
| Orbis Investment Advisory Ltd | ORIDGB21 | 1 code |
| Orbit Investment Securities Services PLC | TRERGB21 | 1 code |
| Orca Investments Limited | ORCIGB21 | 1 code |
| Orient Money Transfer Ltd | ORMTGB22 | 1 code |
| Origo Secure Internet Services Ltd | ORIGGB21 | 1 code |
| Origo Secure Internet Services Ltd | ORIGGB22 | 1 code |
| Origo Secure Internet Services Ltd | ORIGGBA1 | 1 code |
| Origo Services Limited | ORSVGB21 | 1 code |
| Orion Capital Managers (uk) Ltd | ORCMGB21 | 1 code |
| Osborne Clark Nominees Lts | OSCNGB21 | 1 code |
| Osiris Capital Partners LLP | OSCPGB21 | 1 code |
| Osprey Holdco Limited | OSHOGB22 | 1 code |
| Otala.markets Ltd | CIPGGB22 | 2 codes |
| Otala.markets Ltd | CIPGGB33 | 3 codes |
| Otus Capital Management | OTCMGB21 | 1 code |
| Outset Global LLP | OUGLGB21 | 1 code |
| Outset Global Trading Limited | OUGTGB21 | 1 code |
| Oversea-chinese Banking Corp. Ltd | OCBCGB2L | 1 code |
| Overseas Trust Bank Limited | OSTBGB21 | 1 code |
| Ovington Capital Management LLP | OCNLGB21 | 1 code |
| Ox Global Investments Limited | GLNVGB21 | 1 code |
| Oxburgh Partners LLP | OXPLGB21 | 1 code |
| Oxbury Bank PLC | OXBRGB22 | 1 code |
| Oxford Limited | EMSAGB21 | 1 code |
| Oxford Technology Management Limited | SEAPGB21 | 1 code |
| Oxford University Management Limited | OUEMGB21 | 1 code |
| Ozan Ltd. | OZANGB21 | 1 code |
| Ozone Financial Technology Limited | OZFTGB22 | 1 code |
| P Schoenfeld Asset Management Ltd | SCSMGB21 | 1 code |
| Paa Capital Ltd | PCATGB21 | 1 code |
| Paaysay Ltd | PYAYGB22 | 1 code |
| Pacific Capital Partners Limited | BPFMGB21 | 1 code |