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Great Britain (GB) Top Mobile Network Operators
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| Mobile Operator Name | Mobile Operator ID |
| O₂ | 347 |
| T-Mobile | 348 |
| Orange | 349 |
| Vodafone | 350 |
| Virgin Mobile | 381 |
| Three | 474 |
| Guernsey (Sure) | 611 |
| Jersey Telecom | 612 |
| Manx Telecom | 613 |
| Jersey Airtel Limited | 667 |
| Cloud 9 | 668 |
| Lycamobile | 669 |
| Truphone | 797 |
| Sure (Guernsey) New Zealand Limited | 10937 |
| FleXtel | 11145 |
| Videotron | 11146 |
| Telesign Mobile (Routo Telecom) | 11147 |
| COLT Technology Services | 11148 |
| HAY SYSTEMS | 11149 |
| Network Rail Infrastructure | 11150 |
| Tismi BV | 11151 |
| Stour Marine | 11152 |
| Resilient Plc | 11153 |
| Lleida.net Serveis Telematics | 11154 |
| Vectone Mobile (Mundio Mobile) | 11155 |
| Mobile Operator Name | Mobile Operator ID |
| Cardboard Fish | 11156 |
| SKY UK (British Sky Broadcasting Ltd) | 11157 |
| Marathon Telecom | 11158 |
| JSC Ingenium (UK) | 11159 |
| Synectiv | 11160 |
| UK Broadband Limited | 11161 |
| Airwave Solutions | 11162 |
| Limitless Mobile | 11163 |
| Inquam Telecom (Holdings) Ltd. | 11164 |
| CESG | 11165 |
| AMSUK LTD | 11166 |
| Home Office | 11167 |
| Hanhaa Limited | 11168 |
