Even those of you not interested in harvestmen can help look
out for this very long-legged (up to 20cm across) and often gregarious species
of unknown origin or name.
Ian Morgan and Sam
Bosanquet have provided a number of links including this one which is an
interesting read if you have a spare couple of minutes:
http://www.eakringbirds.com/eakringbirds3/arachnidsleiobunumsp.htm