1984 (December) - New English Library (UK) paperback
1988 (February) - Arrow (UK) paperback
2011 (September) - Black Hill Books (UK) e-book
2012 (unknown) - unknown (Russia) hardback, as Проклятые
ISBN 0-450-05639-2 | £1.75 | 240 pages | cover art by unknown artist
ISBN 0-09-956390-8 | £2.50 | 240 pages | cover art by unknown artist
ISBN unknown | price unknown | 376 pages | cover art as for 1 above
Accursed was also scheduled to be published by Phantom Press in Poland in 1992, under the title of Przekleci. However I haven't yet seen any evidence that this happened.
The Russian editions of Guy's works are usually published by Phantom Press too, but this one may be a samizdat or bootleg edition, but unusually luxurious. The third image above (after the British covers) is the cover of the hardback, while the fourth is the slipcase that it comes in. Check out the images at Fantlab.ru!