There is no British Embassy in Guinea-Bissau.
If you need consular assistance, you should contact the British Honorary Consul in Bissau:
Mr Jan Van Maanen
telephone: +245 95 5522772 or +245 96 6622772
or the British Embassy in Dakar, Senegal.

There is no U.S. Embassy in Guinea-Bissau.
All official U.S. contact with Guinea-Bissau is handled by the U.S. Embassy in Senegal.
U.S. also a “virtual presence post” website for Guinea-Bissau in English and Portuguese.

Consulates and embassies of other countries can be found in French, Portuguese or Italian pages of this site.
You also can look at sites like: https://www.rgb-visa.com/Embassies.aspx or http://www.embassypages.com/guineabissau or http://www.embassy-worldwide.com

All these data are, however, subject to change over time and we cannot ensure that the mentioned sites are always active.
By our part, we will try to update them as it will be possible, but for the latest information on embassies and consulates in Bissau you can also ask at the address listed on the Contact page.

Guinea Bissau tourism Network for Ecotourism