I hope we're not going to see scenes of major disorder at the Carnival. Around a million people attend,and in recent years arrests have remained fairly static at about 200 - mainly for what the Police call 'non-serious crime'.
I've been working in Notting Hill over the past week, and expectations are high that all will be well. One of the reasons that large numbers of Police are required is the difficulty of moving officers rapidly through streets packed with people if they are needed. Police officers are scattered throughout the crowds in small groups, so wherever you are you can almost always see uniforms.
For those who have never attended I can recommend the experience - the atmosphere is generally happy and relaxed, the music is great, and the carnival costumes are absolutely amazing.