These are some sites of people I've worked with or you may find of interest

Hi-Artz Press Myspace Site
More images than this site - and groovy music too!
 
Saatchi Gallery
Saatchi's online art gallery.
 
University of Western England Book Arts Newsletter
Well worth subscribing to if you are into book arts.
 
Le Gun Magazine
Former RCA students edgy illustration journal.
 
BBC Collective
BBC's online art gallery.
 
Alembic Press
Claire and David Bolton's long established workshop and letterpress resource page.  They also run occasional courses and have an apprenticeship scheme.
David Bolton's Monocaster
A link to a film on You Tube of this magnificent piece of equipment!
 
Hatch Showprint
Printing in Nashville since 1879
 
Bryce McCloud/ Isle of Printing
Printng in Nashville since er...
 
Ace Cafe London
Iconic bikers cafe, for which Helen Ingham does occasional design work.
 
The Ludo Press
Long established traditional family printers.
 
Big Arts Week workshops
Get involved with your local school
 
Experimental Letterpress Workshop
Clever and quirky items produced by the clever and quirky Rose Gridneff and Alex Cooper.
 
Shelf
Cool shop in E2.  Take a friend in on your birthday and get them to treat you!
 
Lois Pryce
Lone female motorcyling adventurer!
 
St Bride Printing Library
Excellent resource and talks programme.
 
scissorspaperstone
Book arts and multiples fair held earlier in the year at Londonprintworks
 
photoworks Magazine
Cutting edge photography quarterly.
 
University Art Collection
 
A broad collection of exciting work from emerging artists who studied at University of the Arts London.
 
Hand and Eye Letterpress
Top quality books, cards, jobbing print all produced on letterpress machines in London.  They also run a student work experience programme.
LoveBox Weekender
A letterpress poster was commissioned for this event where it was shown in their gallery and sold in limited edition (digital print), along with a group of other  University Art Collection artists. 
PrintWeek Magazine
Leading print industry magazine, which featured Helen on 4/07/08, in the article 'Offsetting litho’s print dominance' by Karen Charlesworth.
St Bride Library
50,000 books. All the classic works on printing technique, visual style, typography, graphic design, calligraphy and more. Also seminars, talks and exhibitions.  BOOK NOW FOR FORTHCOMING LETTERPRESS DAY, FRIDAY NOV 7, 2008

Letterpress Resource Sites
British Letterpress,
Run by enthusiast, Ben Brundell.
Letterpress Alive.
Run by Alembic Press.
MetalType,
UK based. Films, classifieds and a regularly updated online newsletter.
Briar Press.
US web based museum, classifieds, downloadable blocks and much more!
The Lettpress group
Anything you want to know and everything else - a real in-box filler!
The Printing Historical Society 
Fostering interest in the history of printing and encourages both the study and the preservation of printing machinery, records, and equipment of historical value.