The sun warms crowds arriving at carnival after a duller first day on Sunday Photograph: Peter Macdiarmid/Getty ImagesMeanwhile, heavy rain was expected in Wales for the annual world bog snorkelling championship (not pictured). Good weather all round, thenPhotograph: Ben Stansall/AFP/Getty ImagesGreen day: A passing dancer lightens up the stucco facades of west LondonPhotograph: Ben Stansall/AFP/Getty ImagesNotting bill: A reveller feels a policeman's collarPhotograph: BEN STANSALL/AFP/Getty ImagesWarm weather in London has boosted attendance on the second day of carnivalPhotograph: Ben Stansall/AFP/Getty ImagesIt is thought 600,000 people – up to three times as many as yesterday – could take to the streets todayPhotograph: Ben Stansall/AFP/Getty ImagesCarnival organisers said security was at its best ever after the event secured its biggest budget in yearsPhotograph: Stephen Hird/ReutersHouse party: Residents look on as carnival dancers pass by Photograph: Ben Stansall/AFP/Getty Images200,000 people joined Europe's biggest street party yesterday in a blaze of colour and noisePhotograph: Frantzesco Kangaris/EPAThe streets of the west London district were transformed with brightly coloured outfits and booming basslinesPhotograph: Frantzesco Kangaris/EPAFestivities got off to a peaceful start with arrests well down on averagePhotograph: Ian Nicholson/PAA change to this year's event saw processions begin earlier than normal as police launched a major security operation around the eventPhotograph: Frantzesco Kangaris/EPAIt was predicted that three times as many people could visit the festivities todayPhotograph: Frantzesco Kangaris/EPAAs has become the norm, people queued throughout the day on Portobello Road for Caribbean jerk chicken. According to a spokeswoman for the festival, more than five tonnes of chicken was being soldPhotograph: Frantzesco Kangaris/EPAAuthorities clamped down on noise levels amid concerns festivalgoers' hearing could be damagedPhotograph: Stephen Hird/Reuters