According to the Telegraph the remotest place in Britain is near Carnmore in the Scottish Highlands. Grid reference NH02020 77000, height 2,000 feet. The greatest danger is being taken for a deer and being shot by a hunter.
“It all seemed so different from the comfort and warmth of home. When I rang Ordnance Survey the man had said, “Sure, no problem. We have that information on file. The remotest point in Britain is in north-west Scotland. We measure it by the distance from the nearest road (near Grudie). It’s 6.48 miles.”
Images from the area:
Yahoo Answers suggests Cape Wrath, the Assynt Peninsula or the Island of Foula, among others.