State of Emergency: The Way We Were: Britain, 1970-1974 by Dominic Sandbrook.
Apparantly, on page 671 it says at the end of the paragraph, for further information, check out the EXCELLENT doomwatch.org site for synopses etc... The book was published in September as a hardback and recently as a paperback, and information on Doomwatch stuff can be found in chapter five titled "The Green Death".
High praise indeed! Thank you very much!
With thanks to Michael Seely for spotting this reference.