"My name is Paul Smith and I'm a Geocacher with a taste for extreme locations. This 'high-tech treasure hunt game' has taken me all over the country - literally. From St. Kilda in the north Atlantic to Jersey (and even Les Minquiers!) off the south coast and from Unst overlooking Muckle Flugga in Shetland to St Agnes, IOS. On the mainland, I've found the most northerly, (Dunnet Head), most easterly (Ness Point) and set the most westerly, at Ardnamurchan Point. Naturally, I'm running out of extremes to visit (I've found all Britain's highest caches too, and held all its highest Geocaching Meets as well its most N/S/E/W) but one mainland location remains; The Lizard! I've not visited since childhood, so I'm looking forward to coming back."
A few days later, on Friday June 22nd I have GC3B67K - Britain's Sixth Most Remote Event (Bryher) just over 50 miles away on Scilly. There are a good selection of geocaches on the islands, including another meet the following day; The Blorenges' 'A Scilly event' on June 23rd, on the main island of St. Mary's.
There is also a UK forum thread or two about the events. Plus this one, by accident.