Doomsday Conspiracy, cover of another edition (the HarperCollins 1991 cover is not yet photographed)Another edition's cover

Cover of another edition of this book. The HarperCollins 1991 jacket has not been photographed yet.

Hardback

Doomsday Conspiracy (1991)

Publisher HarperCollins Year 1991 ISBN 9780002236393

Identification points are listed only where two independent sources agree. Last reviewed 30 Oct 2026.

Market value

What decides the price

  • It is the first UK edition; the true first was published elsewhere.
  • The original dust jacket carries much of the price for a book of this age; its condition matters as much as the book's.
  • Condition is graded separately for book and jacket, from Fine down to Poor.

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Sales record

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In short

Quick answer

Who published the Doomsday Conspiracy 1991 hardback?
HarperCollins, London, in 1991, in hardback.
Identification

How to identify this edition

William Morrow published the first edition in New York in 1991 (ISBN 0688084893). The British first is the HarperCollins, London, 1991 hardback, ISBN 0002236397, about 320 pages, issued in a dust jacket. A Fontana 'special overseas edition' paperback (ISBN 0006472087) is also dated 1991, the HarperCollins paperback under the same ISBN followed in 1993, and a Charnwood large print edition appeared at Leicester in 1992. Any copy with a William Morrow imprint, or a Book Club Associates (BCA) issue, is not the HarperCollins trade first.

Publisher's practice

How HarperCollins marked its first editions

A first printing from HarperCollins in London, or from one of its British imprints such as Voyager, is identified by a number line on the copyright page that still includes 1.

How to read it

Read the full guide to HarperCollins first editions, decade by decade, and check your copy's copyright page against it. Our number line decoder reads the printing from the row of numbers.

Printing by printing

Printings and states

First impression

1991

At a glance

Not yet researched

We have not yet confirmed the issue points that tell this first impression from later ones. Until we do, compare your copy's title page and copyright page with the publisher, place and year above: any later printing or edition statement means it is not this one.

Know the points? Tell us. We publish them, with credit, once a second source agrees.

Notes

The cover image shows this book but may not be this edition or printing.

Questions collectors ask

Frequently asked questions

Who published the Doomsday Conspiracy 1991 hardback?

HarperCollins, London, in 1991, in hardback.

Sources

Where these facts come from

Points of issue are listed only where at least two independent sources agree. Last reviewed 30 October 2026. Reviewed by Harriet Ellis; read how we check facts.