Flux

From Author Wars - https://authorwars.com/publications/flux-14064.html

Overview:

Title: Flux
Author: Stephen Baxter
Year: 1994
ISBN-10: 0006476201
Publisher: HarperCollins (UK)
Price: £4.99
Pages: 366
Binding: Paperback
Type: Novel
Title Reference: Flux
Notes: First printing as per number line.
Artist is not credited, although it's the same as the HC, I'm frankly not sure it's Bob Eggleton (he's credited for the US book).