Aries 1

From Author Wars - https://authorwars.com/publications/aries-1-3025.html

Overview:

Title: Aries 1
Author: John Grant
Year: 1979
ISBN-10: 0715377779
Publisher: David & Charles
Price: £4.95
Pages: 191
Binding: Hardcover
Type: Anthology
Title Reference: Timeslip
Notes: Price from BLIC.
According to the listing in Locus #232 (April 1980), this was simultaneously published in the UK and the US by the same publisher with the same ISBN. The US edition was $14.00. Perhaps it was just a stickered distribution of the UK printing.