Seeing that the United Kingdom is some 4,200 to 4,900 miles (6759 to 7885 kms) away from the Caribbean, and that the Caribbean Sea is part of the Atlantic Ocean, we could have a bit of a problem in answering this question.
I think that you are referring to the Straits of Gibraltar, although they're not controlled exclusively by the UK any more.
The Straits of Gibraltar is the narrow opening between the Mediterranean Sea and the Atlantic Ocean.
The Strait of Gibraltar
The Straits of Gibraltar.
This is the strait of Gibraltar.
The Strait of Gibraltar joins the Atlantic Ocean and the Mediterranean Sea. It separates the European countries of Gibraltar and Spain from the African country of Morocco.
The Strait of Gibraltar joins the Atlantic Ocean and the Mediterranean Sea. It separates the European countries of Gibraltar and Spain from the African country of Morocco.
The straits of Gibraltar.
There are three: France Morocco Spain If you include territories, then the United Kingdom would also be acceptable as it has territories in the Mediterranean Sea as well as having its homeland in the Atlantic.
Atlantic Airlines - United Kingdom - was created in 2001.
It is controlled by the United Kingdom but still claimed by both Argentina and the U.K.
The Falkland Islands, called in Argentina Los Malvinas.
The English Channel is controlled by the United Kingdom off the Iberian Peninsula.
The United Kingdom.
The Atlantic Ocean.