This Saturday 23rd May:
I'll be signing 3rd edition of For every minute you are angry you lose sixty seconds of happiness:
Photo London 3 - 4 pm. MACK / Booth P5, Great Arch Hall, Embankment Level, Somerset House, Strand, WC2R 1LA
Offprint 5 - 6 pm. MACK / Turbine Hall, Tate Modern, SE1 9TG.
Offprint is free, just wander in. You need to buy tickets for Photo London.