xtinction Rebellion activists will continue their four-day campaign in central London on Saturday. Wildlife presenter Chris Packham has made a rallying call for “every last person who cares” about the planet to join Extinction Rebellion after thousands took part in a demonstration on Saturday. Event director Hugh Brasher said it is “passionately committed” to minimising the environmental impacts of its events which also include the Brighton Marathon, The Big Half, Royal Parks Half, London 10,000, Westminster Mile, Great City Race, Ride London cycle event and Swim Serpentine