| 1 | British and Irish |
| 2 | Irish and Northern Irish |
| 3 | Irish and English |
| 4 | Afghan |
| 5 | Irish and Scottish |
| 6 | Irish and Welsh |
| 7 | British, Irish and Northern Irish |
| 8 | Albanian |
| 9 | British, Irish and English |
| 10 | British, Irish and Scottish |
| 11 | British, Irish and Welsh |
| 12 | Algerian |
| 13 | Irish, Northern Irish and English |
| 14 | Irish, Northern Irish and Scottish |
| 15 | Irish, Northern Irish and Welsh |
| 16 | American Samoan |
| 17 | Irish, English and Scottish |
| 18 | Irish, English and Welsh |
| 19 | Irish, Scottish and Welsh |
| 20 | Andorran |
| 21 | British, Irish, Northern Irish and English |
| 22 | British, Irish, Northern Irish and Scottish |
| 23 | British, Irish, Northern Irish and Welsh |
| 24 | Angolan |
| 25 | British, Irish, English and Scottish |
| 26 | British, Irish, English and Welsh |
| 27 | British, Irish, Scottish and Welsh |
| 28 | Antiguan and Barbudan |
| 29 | Antiguan |
| 30 | Barbudan |
| 31 | Azerbaijani |
| 32 | Argentinian |
| 33 | Irish, Northern Irish, English and Scottish |
| 34 | Irish, Northern Irish, English and Welsh |
| 35 | Irish, Northern Irish, Scottish and Welsh |
| 36 | Australian |
| 37 | Australian Aboriginal |
| 38 | Irish, English, Scottish and Welsh |
| 39 | British, Irish, Northern Irish, English and Scottish |
| 40 | Austrian |
| 41 | British, Irish, Northern Irish, English and Welsh |
| 42 | British, Irish, Northern Irish, Scottish and Welsh |
| 43 | British, Irish, English, Scottish and Welsh |
| 44 | Bahamian |
| 45 | Irish, Northern Irish, English, Scottish and Welsh |
| 46 | British, Irish, Northern Irish, English, Scottish and Welsh |
| 48 | Bahraini |
| 50 | Bangladeshi |
| 51 | Armenian |
| 52 | Barbadian |
| 53 | British and Other |
| 54 | Northern Irish and Other |
| 55 | English and Other |
| 56 | Belgian |
| 57 | Scottish and Other |
| 58 | Welsh and Other |
| 59 | Northern Irish, British and Other |
| 60 | Bermudian |
| 61 | English, British and Other |
| 62 | Scottish, British and Other |
| 63 | Welsh, British and Other |
| 64 | Bhutanese |
| 65 | English, Northern Irish and Other |
| 66 | Scottish, Northern Irish and Other |
| 67 | Welsh, Northern Irish and Other |
| 68 | Bolivian |
| 69 | Bosnian |
| 70 | Bosnian and Herzegovinian |
| 71 | Herzegovinian |
| 72 | Motswana |
| 73 | English, Scottish and Other |
| 74 | English, Welsh and Other |
| 75 | Welsh, Scottish and Other |
| 76 | Brazilian |
| 77 | English, Northern Irish, British and Other |
| 78 | Scottish, Northern Irish, British and Other |
| 79 | Welsh, Northern Irish, British and Other |
| 80 | English, Scottish, British and Other |
| 81 | English, Welsh, British and Other |
| 82 | Welsh, Scottish, British and Other |
| 83 | English, Scottish, Northern Irish and Other |
| 84 | Belizean |
| 85 | English, Welsh, Northern Irish and Other |
| 86 | Chagos Islander, Chagossian |
| 87 | Welsh, Scottish, Northern Irish and Other |
| 88 | English, Welsh, Scottish and Other |
| 89 | English, Welsh, Scottish, Northern Irish and Other |
| 90 | Solomon Islander |
| 91 | English, Welsh, Scottish, British and Other |
| 92 | British Virgin Islander |
| 93 | Welsh, Scottish, Northern Irish, British and Other |
| 94 | English, Welsh, Northern Irish, British and Other |
| 95 | English, Scottish, Northern Irish, British and Other |
| 96 | Bruneian |
| 97 | English, Welsh, Scottish, Northern Irish, British and Other |
| 100 | Bulgarian |
| 101 | Irish and Other |
| 102 | British, Irish and Other |
| 103 | Irish, Northern Irish and Other |
| 104 | Burmese |
| 105 | Irish, English and Other |
| 106 | Irish, Scottish and Other |
| 107 | Irish, Welsh and Other |
| 108 | Burundian |
| 109 | British, Irish, Northern Irish and Other |
| 110 | British, Irish, English and Other |
| 111 | British, Irish, Scottish and Other |
| 112 | Belarusian |
| 113 | British, Irish, Welsh and Other |
| 114 | Irish, Northern Irish, English and Other |
| 115 | Irish, Northern Irish, Scottish and Other |
| 116 | Cambodian |
| 117 | Irish, Northern Irish, Welsh and Other |
| 118 | Irish, English, Scottish and Other |
| 119 | Irish, English, Welsh and Other |
| 120 | Cameroonian |
| 121 | Irish, Scottish, Welsh and Other |
| 122 | Irish, English, Scottish, Welsh and Other |
| 123 | Irish, Northern Irish, Scottish, Welsh and Other |
| 124 | Canadian |
| 125 | Irish, Northern Irish, English, Welsh and Other |
| 126 | Irish, Northern Irish, English, Scottish and Other |
| 127 | British, Irish, Scottish, Welsh and Other |
| 128 | British, Irish, English, Welsh and Other |
| 129 | British, Irish, English, Scottish and Other |
| 130 | British, Irish, Northern Irish, Welsh and Other |
| 131 | British, Irish, Northern Irish, Scottish and Other |
| 132 | Cape Verdean |
| 133 | British, Irish, Northern Irish, English and Other |
| 134 | British, Irish, Northern Irish, English, Scottish and Other |
| 135 | Irish, Northern Irish, English, Scottish, Welsh and Other |
| 136 | Caymanian |
| 137 | British, Irish, Northern Irish, English, Welsh and Other |
| 138 | British, Irish, Northern Irish, Scottish, Welsh and Other |
| 139 | British, Irish, English, Scottish, Welsh and Other |
| 140 | Central African |
| 141 | British, Irish, Northern Irish, English, Scottish, Welsh and Other |
| 144 | Sri Lanka |
| 148 | Chadian |
| 152 | Chilean |
| 156 | Chinese |
| 158 | Taiwanese |
| 162 | Christmas Islander |
| 166 | Cocos Islander |
| 170 | Colombian |
| 174 | Comoran |
| 175 | Mahoran |
| 178 | Congolese (Republic of Congo) |
| 179 | Congolese (not otherwise specified) |
| 180 | Congolese (Democratic Republic of Congo) |
| 184 | Cook Islander |
| 188 | Costa Rican |
| 191 | Croatian |
| 192 | Cuban |
| 203 | Czech |
| 204 | Beninese |
| 208 | Danish |
| 212 | Dominican (Dominica) |
| 214 | Dominican (Dominican Republic) |
| 218 | Ecuadorian |
| 222 | Salvadoran |
| 226 | Equatorial Guinean |
| 231 | Ethiopian |
| 232 | Eritrean |
| 233 | Estonian |
| 234 | Faroese |
| 238 | Falkland Islander |
| 242 | Fijian |
| 246 | Finnish |
| 248 | ?land Islander |
| 250 | French |
| 254 | Guianese |
| 258 | French Polynesian |
| 262 | Djiboutian |
| 266 | Gabonese |
| 268 | Georgian |
| 270 | Gambian |
| 275 | Palestinian |
| 276 | German |
| 288 | Ghanaian, Ghanian |
| 292 | Gibraltese |
| 296 | I-Kiribati |
| 300 | Greek |
| 304 | Greenlander |
| 308 | Grenadian |
| 312 | Guadeloupean |
| 316 | Guamanian |
| 320 | Guatemalan |
| 324 | Guinean (Guinea) |
| 325 | Guinean (not otherwise specified) |
| 326 | Gurkha |
| 328 | Guyanan, Guyanese |
| 332 | Haitian |
| 333 | Haredi |
| 340 | Honduran |
| 344 | Hong Kong Chinese |
| 348 | Hungarian |
| 352 | Icelandic |
| 356 | Indian |
| 360 | Indonesian |
| 364 | Iranian |
| 368 | Iraqi |
| 372 | Irish |
| 376 | Israeli |
| 380 | Italian |
| 384 | Ivorian |
| 388 | Jamaican |
| 392 | Japanese |
| 398 | Kazakhstani |
| 400 | Jordanian |
| 404 | Kenyan |
| 408 | Korean (North Korea) |
| 409 | Korean (not otherwise specified) |
| 410 | Korean (South Korea) |
| 414 | Kuwaiti |
| 417 | Kyrgyzstani |
| 418 | Laotian |
| 422 | Lebanese |
| 426 | Basotho |
| 428 | Latvian |
| 430 | Liberian |
| 434 | Libyan |
| 438 | Liechtensteiner |
| 440 | Lithuanian |
| 442 | Luxembourger |
| 446 | Macao Chinese |
| 450 | Madagascan Malagasy |
| 454 | Malawian |
| 458 | Malaysian |
| 462 | Maldivan |
| 466 | Malian |
| 470 | Maltese |
| 474 | Martinique French |
| 478 | Mauritanian |
| 480 | Mauritian |
| 484 | Mexican |
| 492 | Monacan |
| 496 | Mongolian |
| 498 | Moldovian |
| 499 | Montenegrin |
| 500 | Montserratian |
| 504 | Moroccan |
| 508 | Mozambican |
| 512 | Omani |
| 516 | Namibian |
| 520 | Nauruan |
| 524 | Nepali |
| 528 | Dutch |
| 531 | Curacaoan |
| 533 | Aruban |
| 534 | Sint Maartener |
| 535 | Bonaire, Sint Eustasius and Saba |
| 540 | New Caledonian |
| 548 | Ni-Vanuatu |
| 554 | New Zealander |
| 555 | Maori |
| 558 | Nicaraguan |
| 562 | Nigerien (Niger) |
| 566 | Nigerian |
| 570 | Niuean |
| 574 | Norfolk Islander |
| 578 | Norwegian |
| 580 | Northern Mariana Islander |
| 583 | Micronesian |
| 584 | Marshallese |
| 585 | Palauan |
| 586 | Pakistani |
| 591 | Panamanian |
| 598 | Papua New Guinean |
| 600 | Paraguayan |
| 604 | Peruvian |
| 608 | Filipino |
| 612 | Pitcairn Islander |
| 616 | Polish |
| 620 | Portuguese |
| 624 | Guinean (Guinea-Bissau) |
| 626 | East Timorese |
| 630 | Puerto Rican |
| 634 | Qatari |
| 638 | R?union French |
| 642 | Romanian |
| 643 | Russian |
| 646 | Rwandan |
| 652 | St Barth?lemy French |
| 654 | St Helenian |
| 657 | Kittitian |
| 658 | Nevisian |
| 659 | Kittitian and Nevisian |
| 660 | Anguillian |
| 662 | St Lucian |
| 663 | St Martin French |
| 670 | St Vincent and the Grenadines |
| 674 | Sammarinese |
| 678 | Sao Tomean |
| 682 | Saudi Arabian |
| 686 | Senegalese |
| 688 | Serbian |
| 690 | Seychellois |
| 694 | Sierra Leonean |
| 702 | Singaporean |
| 703 | Slovak Slovakian |
| 704 | Vietnamese |
| 705 | Slovenian |
| 706 | Somali |
| 707 | Somalilander |
| 710 | South African |
| 716 | Zimbabwean |
| 728 | South Sudanese |
| 729 | Sudanese |
| 732 | Sahraouian Sahrawi Sahrawian |
| 740 | Surinamese |
| 744 | Svalbard and Jan Mayen Islander |
| 748 | Swazi |
| 752 | Swedish |
| 756 | Swiss |
| 760 | Syrian |
| 762 | Tajikistani |
| 764 | Thai |
| 768 | Togolese |
| 772 | Tokelauan |
| 776 | Tongan |
| 780 | Trinidadian and Tobagonian |
| 781 | Trinidadian |
| 782 | Tobagonian |
| 784 | Emirati |
| 788 | Tunisian |
| 792 | Turkish |
| 795 | Turkmenistani |
| 796 | Turks and Caicos Islander |
| 798 | Tuvaluan |
| 800 | Ugandan |
| 804 | Ukrainian |
| 807 | Macedonian |
| 818 | Egyptian |
| 831 | Guernsey Islander |
| 832 | Jersey Islander |
| 833 | Manx |
| 834 | Tanzanian |
| 840 | US Citizen |
| 850 | US Virgin Islander |
| 854 | Burkinabe |
| 858 | Uruguayan |
| 860 | Uzbekistani |
| 862 | Venezuelan |
| 876 | Wallis and Futuna Islander |
| 877 | Wallisian |
| 878 | Futun |
| 882 | Samoan |
| 887 | Yemeni |
| 894 | Zambian |
| 901 | Greek Cypriot |
| 902 | Turkish Cypriot |
| 903 | Cypriot (not otherwise specified) |
| 904 | Kurdish |
| 912 | Canary Islander |
| 913 | Spanish |
| 914 | Basque |
| 915 | Frisian |
| 916 | Breton |
| 921 | English |
| 922 | Northern Irish |
| 923 | Scottish |
| 924 | Welsh |
| 926 | British |
| 927 | Cornish |
| 929 | British Overseas Territories Citizen |
| 931 | Channel Islander |
| 932 | Ulster Scots |
| 933 | Gaelic |
| 935 | Romany |
| 941 | English and Welsh |
| 942 | English and Scottish |
| 943 | English and Northern Irish |
| 944 | English and British |
| 945 | Welsh and Scottish |
| 946 | Welsh and Northern Irish |
| 947 | Welsh and British |
| 948 | Scottish and Northern Irish |
| 949 | Scottish and British |
| 950 | Northern Irish and British |
| 951 | Kosovan |
| 955 | English, Welsh and Scottish |
| 956 | English, Welsh and Northern Irish |
| 957 | English, Welsh and British |
| 958 | English, Scottish and Northern Irish |
| 959 | English, Scottish and British |
| 960 | English, Northern Irish and British |
| 961 | Welsh, Scottish and Northern Irish |
| 962 | Welsh, Scottish and British |
| 963 | Welsh, Northern Irish and British |
| 964 | Scottish, Northern Irish and British |
| 965 | English, Welsh, Scottish and Northern Irish |
| 966 | English, Welsh, Scottish and British |
| 967 | English, Welsh, Northern Irish and British |
| 968 | English, Scottish, Northern Irish and British |
| 969 | Welsh, Scottish, Northern Irish and British |
| 970 | English, Welsh, Scottish, Northern Irish and British |
| 971 | Czechoslovakian |
| 972 | Soviet |
| 973 | Yugoslav |
| 974 | Serbian and Montenegrin |
| 980 | Arab (not otherwise specified) |
| 981 | European (not otherwise specified) |
| 982 | African (not otherwise specified) |
| 983 | Middle Eastern (not otherwise specified) |
| 984 | Asian (not otherwise specified) |
| 985 | North American (not otherwise specified) |
| 986 | Central American (not otherwise specified) |
| 987 | South American (not otherwise specified) |
| 988 | Caribbean (not otherwise specified) |
| 989 | Australasian (not otherwise specified) |
| 990 | Other |
| 998 | Mixed |
| 999 | Dutch Antillean |
| -6 | Missing |
| -8 | Unacceptable text response, Failed multi-ticks |
| -9 | No code required (students not at their term-time address) |
