To celebrate their 50th anniversary, they're having a special promotion.
"This year Gollancz celebrates 50 years of bringing you the very best in Science Fiction and Fantasy, from classic novels through to modern-day bestsellers.
We've chosen 50 titles published under the Gollancz imprint over the past 50 years. Now we want you to tell us your favourites! Simply visit the website www.gollancz50.com and select one science fiction title and one fantasy title to cast your vote.
We'll announce the winners in September and then publish the top-five Science Fiction and top-five Fantasy titles in a fantastic collectable retro-look edition to celebrate!"
Congratulations, Gollancz. Keep up the good work. We want fifty more years, at least.