>no minor or partial accomplishment
 
I'll see if I can dig out some photos of my visits to these extremities, 
although I well remember there was thick fog the day I visited Cape Wrath 
and I could barely see the sea below!
 >whether you hit all your points by actually twinkling your toes at low 
>tide or not
 
I did so at Land's End in the days before the spoilsports decided it was 
too dangerous to let people climb down to the foreshore. On the day I went 
to Lizard Point, there was a Force 10 gale rolling in from the Atlantic and 
it was more a case of the sea twinkling me than the other way around.
Cape Wrath has sheer 120-metre cliffs, and you'd probably need to be a 
skilled climber to reach the sea (see 
http://www.durness.org/cape%20wrath.htm). It's not advisable to try and use 
a different route to reach the bottom, because the whole surrounding area 
is used by the military for bombing practice.
The cliffs at Duncansby Head 
(
http://www.undiscoveredscotland.co.uk/johnogroats/duncansbyhead/) and 
Dunnet Head (
http://www.btinternet.com/~k.trethewey/dunnet_head1.htm) are 
less high, but perhaps even more extreme. Only the sort of places that 
puffins wish to dip their toes.
Luckily, the sea is extremely easy to reach at Dungeness (there's a grainy 
picture at 
http://www.dungenesslighthouse.btinternet.co.uk/page4.html), 
although this 'corner' holds less romance in popular imagination that the 
others. It's basically a shingle beach that was created only a few hundred 
years ago, and is being constantly shifted by tidal patterns.
The most easterly point is also very easy (see 
http://www.suffolkcam.co.uk/lowestoft_north06042002.htm).
Regards,
Kevin Meynell