The atheist posters are the idea of the British Humanist Association (BHA) and have been supported by prominent atheist Professor Richard Dawkins.
The complete slogan reads: “There’s probably no God. Now stop worrying and enjoy your life.”
Professor Dawkins said: “Religion is accustomed to getting a free ride - automatic tax breaks, unearned respect and the right not to be offended, the right to brainwash children.