Books of Blood, Volumes 4-6

The original record's claim that Volumes 4-6 were hardcover-first (Weidenfeld & Nicolson) and thus the reverse of Volumes 1-3 is incorrect. All six volumes were Sphere paperback originals; the Sphere paperback is the true UK first for Volumes 4-6 as well. The Weidenfeld hardcovers are near-simultaneous but later, and the US retitled editions (such as The Inhuman Condition and In the Flesh) are later still.