The Ghostly one asked (elsewhere) if I would recommend Lundy Island as a destination and here seems the best place to answer.
Yes! With certain caveats, do not go on a summer day-trip, the MS Oldenburg is a 2nd world war German shallow drafted sick bucket that takes 2 and a half hours to cross from either Bideford or Ilfracombe, you get about 3 hours on the island, 3 hours isn't nearly enough time before you have to go back down for the trip back with 25% of the passengers seeming to have no racial memory of being part of a maritime nation. On the plus side it is the cheapest and only method of travel in the summer when the Puffins and Shearwaters are nesting, but stay there for at least a few days.
The other warning I would hazard is, if you want comfort and modernity it's the wrong destination for you, the lights go out at 12.30 and the accommodation is comfortable but sparse.
With that out of the way, it's beautiful, a 400ft granite outcrop 12 miles from north Devon, 3 miles by 0.5 doesn't seem much but it will take you the whole day to walk to the north light and back via the coastal paths and you will still have missed stuff.
History wise (condensed), Neolithic settlements, owned at times by the Nights Templar’s, the Marisco family, pirates who were implicated in an assassination attempt on Henry III and built the castle, Barbary Pirates who captured Europeans and sold them in Algiers, a member of parliament who was entrusted with the shipping of convicts over to Virginia to take up the slack when the slaves were freed, but who took the money and dumped them on Lundy as his personal slaves while he did insurance swindles with his other boats, the Heaven family who renamed it the Kingdom of Heaven, built a church that doesn't have the usual east-west alignment but instead points to the summer solstice and according to one of the stonemasons currently doing it up has strange carvings on the back of some of the blocks they have reset, which (because they are are stonemasons and weird) they have just returned without documenting.
It is surrounded by at least 200 wrecked ships, a selection of lifebuoys off many of these grace the walls of the Marisco tavern (the only nightlife), including a battleship HMS Montegu grounded there in 1906.
There is a plethora of wildlife, mountain goats, Soay sheep, Atlantic Grey seals, fishing, climbing and scuba diving (too fucking cold).
I go mainly in winter, as because I went to school with the Island manager I get concessionary tickets on the Helicopter that stands in for the sick-bucket during the winter season, which only takes 7 minutes and is fun, also I get free or cheap accommodation.
That aside, the bleakness and totally dark skies at night suit me, the tavern stocks some fine whiskey, good ales and a selection of rums and has a big roaring fire and closes only when you can't function anymore.
(My picture of some bendy light shit going on)
Go.