Tristan Da Cunha

Tristan da Cunha is an active volcanic island with rare wildlife and home to 261 British Citizens living in the world's most isolated settlement of Edinburgh of the Seven Seas ~far from the madding crowd~ in the South Atlantic Ocean

http://www.tristandc.com/

First postcode for remote UK isle

"An intervention by the Royal Mail has given a boost to online shoppers living on one of the world's most remote islands - Tristan Da Cunha."

http://news.bbc.co.uk/1/hi/uk/4129636.stm