For future searches:
Just a Little P*r*i*c*k* By Hilary Butler and From One P*r*i*c*k* to another by the same author are excellent. Remove the * hehe

Choosing Not To Immunise Our Children
The Reasons Behind the Decision Dale Fraser D.O., B.Sc.Publisher: Inkview Publishing Pty Ltd 2007 NSW

The Vaccine Book by Sears is great but based on the USA system which still has huge issues with mercury and the like.