Prof George Spencer-Brown, author of Laws of Form, and Only Two Can Play This Game, announces a change of telephone to:   +44 1985 844 855  He will be pleased to receive calls on this number between the hours of 0400 an 1200 London time, from fans who would like to chat with him, and from persons or organisations who might wish to engage his services as an after-dinner speaker, lecturer, therapist, guardian or tutor etc.  Some of his works on prime numbers, including his latest proof of Riemann’s hypothesis via Denjoy’s equivalent can be found here