In reply to OutdoorGeoff: Hi Geoff, I found a great little wall on Eriskay which is attatched to south uist by the causway. The area is called Roisinis, photo here of the one problem i did
http://www.flickr.com/photos/stonecountry/3948032952/in/photostream/
Probably about 20 problems possible including an excellent traverse above a bowling green landing (though moist)
Its location is hard to see on google maps but its in the vicinity of the below co-ords
57.088291,-7.275198
I also heard there was some bouldering in the col beneath the summit of Heckla ? south uists highest peak but i never made the journey.
If you make it across to Barra there is a great boulder at Clac Mhor Nan Glennan which overlooks the airport/beach.
Best of all though is Aird Mhinge on Harris lots to do and lots to discover in the area (topo on scottish climbs)
Hope you find some,
cheers
Adi Gill