Reportedly taken in Feb '14, held by AQA British hostage has been released after a military intelligence operation in Yemen, the Foreign says.
The hostage was extracted by UAE forces based in the port city of Aden, according to UAE state news agency WAM.
Speaking from the Iranian capital Tehran, Foreign Secretary Philip Hammond added: "The British national is safe and well, and is receiving support from British government officials.
"We are very grateful for the assistance of the UAE."
The hostage has not been identified but is reported to have been held by al Qaeda since going missing in February last year.
The hostage was taken to Abu Dhabi on a military plane on Saturday night, when the emirate's crown prince Sheikh Mohammed bin Zayed al-Nahyan told Prime Minister David Cameron about the release.