The #WeAreWatching flag flew high in London to open the 2021 GDIF at the Old Royal Naval College, Greenwich. Flying the flag close to the line of zero degrees longitude - the symbolic centre of time and space - reinforced its timely and global resonance. Several UK cities will host the flag on its way up to Glasgow’s COP26 this November, spreading its crystal-clear message to leaders with the power to affect climate change : the eyes of the world are upon you.