OK a few things.
England, Scotland, Wales, Northern Island, Gibraltar, The Falklands, South Sandwhich Islands, South Shetlands, Cayman Islands, British Virgin Islands, Pitcairn Islands, South Georgia Islands, British Indian Ocean territory, Tristan da Cunha, Saint helena, Ascension Island, Akrotiri & Dhekelia, Burmuda, Montserrat, Anguilla, Turk and Caicos Islands, The Cjannel Islands and of course British Antarctic territory.
Sound like empire to you? Does to me.
http://en.wikipedia.org/wiki/Picc-Vic_tunnel
Thats the project!