Address - c/o FCDO, King Charles Street, London SW1A 2AH
Country | On an envelope | Dear… |
| Albania | HE Mr Nicholas Abbott | Ambassador |
| Algeria | HE Mr James Downer | Ambassador |
| Andorra | see Spain | |
| Angola | HE Mr Bharat Joshi | Ambassador |
| Antigua and Barbuda | see Barbados | |
| Argentina | HE Mrs Kirsty Hayes | Ambassador |
| Armenia | HE Mr John Gallagher | Ambassador |
| Australia | HE Mrs Vicki Treadell, CMG, MVO | High Commissioner |
| Austria | HE Mrs Lindsay Skoll, CMG | Ambassador |
| Azerbaijan | HE Mr Fergus Auld, OBE | Ambassador |
| Bahamas | HE Mr Thomas Hartley | High Commissioner |
| Bahrain | HE Mr Alastair Long | Ambassador |
| Bangladesh | HE Ms Sarah Cooke | High Commissioner |
| Barbados | HE Mr Scott Furssedonn-Wood, MVO | High Commissioner |
| Belarus | currently no British Ambassador | |
| Belgium | HE Ms Anne Sherriff | Ambassador |
| Belize | currently vacant | |
| Benin | see Ghana | |
| Bolivia | HE Mr Richard Porter | Ambassador |
| Bosnia and Herzegovina | HE Mr Julian Reilly | Ambassador |
| Botswana | HE Ms Giles Enticknap, MBE | High Commissioner |
| Brazil | HE Ms Stephanie Al-Qaq | Ambassador |
| Brunei | HE Ms Alexandra McKenzie | High Commissioner |
| Bulgaria | HE Dr Rob Dixon | Ambassador |
| Burundi | see Rwanda | |
| Cambodia | HE Mr Dominic Williams, MBE | Ambassador |
| Cameroon | HE Mr Matt Woods | High Commissioner |
| Canada | HE Mr Robert Tinline | High Commissioner |
| Cape Verde | see Portugal | |
| Chad | HE Mr Ross Matthews | Ambassador |
| Chile | HE Ms Louise De Sousa | Ambassador |
| China | HE Dame Caroline Wilson, DCMG | Ambassador |
| Colombia | HE Mr George Hodgson | Ambassador |
| Comoros | see Madagascar | |
| Costa Rica | HE Mr Ben Lyster-Binns | Ambassador |
| Côte d'Ivoire | HE Ms Catherine Brooker | Ambassador |
| Croatia | HE Mr Simon Thomas, OBE | Ambassador |
| Cuba | HE Sir George Hollingbery, KCMG | Ambassador |
| Cyprus | HE Mr Michael Tatham | High Commissioner |
| Czech Republic | HE Mr Matt Field, OBE | Ambassador |
| Democratic Republic of Congo | HE Ms Alyson King, OBE | Ambassador |
| Denmark | HE Ms Joëlle Jenny | Ambassador |
| Djibouti | HE Mr Vinay Talwar | Ambassador |
| Dominica | see Barbados | |
| Dominican Republic | HE Dr Carol van der Walt | Ambassador |
| Ecuador | HE Mr Chris Campbell | Ambassador |
| Egypt | HE Mr Gareth Bayley, OBE | Ambassador |
| El Salvador | HE Mr Ramin Navai | Ambassador |
| Equatorial Guinea | see Cameroon | |
| Eritrea | currently no British Ambassador | |
| Estonia | HE Mr Ross Allen | Ambassador |
| Eswatini | HE Mr Colin Wells | High Commissioner |
| Ethiopia | HE Mr Darren Welch | Ambassador |
| Fiji | HE Dr Brian Jones | High Commissioner |
| Finland | HE Mrs Laura Davies | Ambassador |
| France | HE Dame Menna Rawlings, DCMG, CVO | Ambassador |
| Gabon | see Cameroon | |
| The Gambia | HE Mr David Belgrove, OBE | High Commissioner |
| Georgia | HE Mr Gareth Ward | Ambassador |
| Germany | HE Mr Andrew Mitchell, CMG | Ambassador |
| Ghana | HE Ms Harriet Thompson | High Commissioner |
| Greece | HE Mr Matthew Lodge | Ambassador |
| Grenada | see Barbados | |
| Guatemala | HE Ms Juliana Correa | Ambassador |
| Guinea | HE Mr John Marshall | Ambassador |
| Guinea-Bissau | see Senegal | |
| Guyana | HE Ms Jane Miller, OBE | High Commissioner |
| Haiti | see Dominican Republic | |
| Holy See | HE Mr Christopher Trott | Ambassador |
| Honduras | see Guatemala | |
| Hong Kong | HE Mr Brian Davidson, CMG | Consul General |
| Hungary | HE Mr Paul Fox | Ambassador |
| Iceland | HE Dr Bryony Mathew | Ambassador |
| India | HE Ms Lindy Cameron, CB, OBE | High Commissioner |
| Indonesia | HE Mr Dominic Jermey, CVO, OBE | Ambassador |
| Iran | HE Hugo Shorter | Ambassador |
| Iraq | HE Mr Stephen Hitchen | Ambassador |
| Ireland | HE Mr Paul Johnston | Ambassador |
| Israel | HE Mr Simon Walters, CMG | Ambassador |
| Italy | HE the Lord Llewellyn of Steep, OBE, PC | Ambassador |
| Jamaica | HE Ms Judith Slater | High Commissioner |
| Japan | HE Ms Julia Longbottom, CMG | Ambassador |
| Jordan | HE Mr Philip Hall, OBE | Ambassador |
| Kazakhstan | HE Ms Katherine Leach | Ambassador |
| Kenya | HE Mr Neil Wigan, OBE | High Commissioner |
| Kiribati | see Fiji | |
| Kosovo | HE Mr Jonathan Hargreaves | Ambassador |
| Kuwait | HE Ms Belinda Lewis | Ambassador |
| Kyrgyzstan | HE Mr Nic Bowler | Ambassador |
| Laos | HE Ms Melanie Barlow | Ambassador |
| Latvia | HE Mr Paul Brummell, CMG | Ambassador |
| Lebanon | HE Mr Hamish Cowell | Ambassador |
| Lesotho | HE Mr Harry MacDonald | High Commissioner |
| Liberia | HE Mr Neil Bradley | Ambassador |
| Libya | HE Dr Martin Longden, CMG, OBE | Ambassador |
| Liechtenstein | see Switzerland | |
| Lithuania | HE Ms Liz Boyles | Ambassador |
| Luxembourg | HE Ms Fleur Thomas | Ambassador |
| Macau | see Hong Kong | |
| Madagascar | HE Mr Patrick Lynch | Ambassador |
| Malawi | HE Ms Fiona Ritchie | High Commissioner |
| Malaysia | currently vacant | |
| Maldives | HE Mr Nick Low | High Commissioner |
| Mali | HE Ms Katy Ransome | Ambassador |
| Malta | HE Ms Cathy Ward, LVO, OBE | High Commissioner |
| Marshall Islands | see Fiji | |
| Mauritania | HE Mr Guy Harrison | Ambassador |
| Mauritius | HE Ms Charlotte Pierre | High Commissioner |
| Mexico | HE Ms Susannah Goshko | Ambassador |
| Micronesia | see Fiji | |
| Moldova | HE Ms Fern Horine | Ambassador |
| Mongolia | HE Ms Fiona Blyth | Ambassador |
| Montenegro | HE Ms Dawn McKen | Ambassador |
| Morocco | HE Simon Martin, CMG | Ambassador |
| Mozambique | HE Ms Helen Lewis | High Commissioner |
| Namibia | HE Mr Charles Moore | High Commissioner |
| Nauru | see Solomon Islands | |
| Nepal | HE Mr Rob Fenn | Ambassador |
| Netherlands | HE Ms Joanna Roper, CMG | Ambassador |
| New Zealand | HE Ms Iona Thomas, OBE | High Commissioner |
| Nicaragua | see Costa Rica | |
| Niger | HE Ms Catherine Inglehearn | Ambassador |
| Nigeria | HE Dr Richard Montgomery, CMG | High Commissioner |
| North Korea | HE Mr David Ellis, OBE | Ambassador |
| North Macedonia | HE Mr Matthew Lawson | Ambassador |
| Norway | HE Ms Jan Thompson, CMG, OBE | Ambassador |
| Oman | HE Dr Liane Saunders, OBE | Ambassador |
| Pakistan | HE Ms Jane Marriott, CMG, OBE | High Commissioner |
| Palau | see Philippines | |
| Palestine | Ms Helen Winterton | Consul General |
| Panama | HE Mr James Dauris | Ambassador |
| Papua New Guinea | HE Ms Anne Macro | High Commissioner |
| Paraguay | HE Ms Danielle Dunne | Ambassador |
| Peru | HE Mr Gavin Cook, OBE | Ambassador |
| Philippines | HE Ms Laure Beaufils | Ambassador |
| Pitcairn Islands | see New Zealand | |
| Poland | HE Ms Anna Clunes, CMG, OBE | Ambassador |
| Portugal | HE Ms Lisa Bandari | Ambassador |
| Qatar | HE Mr Neerav Patel | Ambassador |
| Romania | HE Mr Giles Portman | Ambassador |
| Russia | HE Mr Nigel Casey, CMG, MVO | Ambassador |
| Rwanda | HE Ms Alison Thorpe | High Commissioner |
| Samoa | HE Mr Gareth Hoar | High Commissioner |
| San Marino | see Italy | |
| São Tomé and Príncipe | see Angola | |
| Saudi Arabia | HE Mr Neil Crompton | Ambassador |
| Senegal | HE Ms Carine Robarts | Ambassador |
| Serbia | HE Mr Edward Ferguson | Ambassador |
| Seychelles | HE Mr Jeff Glekin | High Commissioner |
| Sierra Leone | HE Ms Josephine Gauld, LVO | High Commissioner |
| Singapore | HE Mr Nikesh Mehta | High Commissioner |
| Slovakia | HE Mr Nigel Baker, OBE, MVO | Ambassador |
| Slovenia | HE Ms Victoria Harrison | Ambassador |
| Solomon Islands | HE Mr Paul Turner | High Commissioner |
| Somalia | HE Mr Michael Nithavrianakis, MVO | Ambassador |
| South Africa | HE Mr Antony Phillipson, CMG | High Commissioner |
| South Korea | HE Mr Colin Crooks, LVO | Ambassador |
| South Sudan | HE Mr David Ashley | Ambassador |
| Spain | HE Sir Alexander Ellis, KCMG | Ambassador |
| Sri Lanka | HE Mr Andrew Patrick | High Commissioner |
| St Kitts and Nevis | see Barbados | |
| St Lucia | see Barbados | |
| St Vincent and the Grenadines | see Barbados | |
| Sudan | embassy temporarily closed | |
| Suriname | see Guyana | |
| Sweden | HE Ms Samantha Job, CMG, MVO | Ambassador |
| Switzerland | HE Mr James Squire, CMG | Ambassador |
| Syria | currently no British Ambassador | |
| Tajikistan | HE Ms Katherine Smitton | Ambassador |
| Tanzania | HE Mrs Marianne Young | High Commissioner |
| Thailand | HE Mr Mark Gooding, OBE | Ambassador |
| Timor-Leste | see Indonesia | |
| Togo | see Ghana | |
| Tonga | HE Mr Philip Malone, LVO | High Commissioner |
| Trinidad and Tobago | HE Mr Jon Dean | High Commissioner |
| Tunisia | HE Mr Roderick Drummond | Ambassador |
| Türkiye | HE Ms Jill Morris, CMG | Ambassador |
| Turkmenistan | HE Mr Stephen Conlon | Ambassador |
| Tuvalu | see Fiji | |
| Uganda | HE Ms Lisa Chesney, MBE | High Commissioner |
| Ukraine | HE Mr Martin Harris, CMG, OBE | Ambassador |
| United Arab Emirates | HE Mr Edward Hobart, CMG | Ambassador |
| United States of America | HE the Lord Mandelson, PC | Ambassador |
| Uruguay | HE Mr Mal Green | Ambassador |
| Uzbekistan | HE Mr Timothy Smart | Ambassador |
| Vanuatu | HE Ms Nicolette Brent, MBE | High Commissioner |
| Venezuela | currently no British Ambassador | |
| Vietnam | HE Mr Iain Frew | Ambassador |
| Yemen | HE Ms Abda Sharif | Ambassador |
| Zambia | HE Nicholas Woolley | High Commissioner |
| Zimbabwe | HE Mr Peter Vowles | Ambassador |
