The United Kingdom of Great Britain and Northern Ireland consists of England, Scotland, Wales, and Northern Ireland. The Isle of Man and the Channel Islands are British Crown Dependencies but are not part of the UK.
The diner inside is not as seen in the show, but the sign is still there and there's local history behind it. There are framed newspaper clippings and the menu acknowledges the show's three waitresses: Alice, Vera, Flo and the owner: Mel.
The cast also includes rising teen stars Reilly McClendon (Pearl Harbor, ER, Just Legal), Cameron Monaghan (Malcolm in the Middle), Charlie McDermott (Frozen River), and Sam Jones III (ER, Smallville) as well as the local judge (played by Orson Bean of Dr. Quinn Medicine Woman fame). Dove Family Approved.