www.192.com "The largest UK directory enquiry service"
www.friendsreunited.co.uk "Contact old school, college or work friends"
www.lookupuk.com "The Resource Centre for finding that Lost Friend or Relative in the UK."

Online telephone directories can also be useful. Obviously people may have moved or be ex-directory and unlisted.

www.ukphonebook.com
www.bt.com/phonenetuk

Find Places in Scotland .....
Try these map based sites which allow searches for places:

uk2.multimap.com
www.streetmap.co.uk
www.easymap.co.uk

Find Family History in Scotland .....
Try Scotsmart's collection of Genealogy links for Clans, Family Name History or Professional Genealogists.

Find Academic Info in Scotland .....
Try Academic Resource