Im an Aussie - but Im sure happy to point you to these good folk:
Permanent Publications,
The Sustainability Centre, East Meon,
Hampshire GU32 1HR, England
all@permaculture.co.uk
Tel:+44(0)1730 823311. Fax:+44(0)1730 823322
and check out the Plants for a Future site and facility whilst there too:
Plants For A Future - A resource center for 7000 useful plants.
pfaf@scs.leeds.ac.uk http://www.scs.leeds.ac.uk/pfaf/
The Field, Penpol, Lostwithiel, Cornwall, PL22 0NG, England
Telephone Bodmin (+44 1208) 872963