Businesses say customers were angry when Ulez expanded, but campaigners point to health benefits.
National Grid turns on the new underground transmission network linking Wimbledon to Crayford.
A service to remember 13 people who died is taking place in Slade Green, south-east London.
A memorial service has been planned for those who died in an explosion in Slade Green 100 years ago.
Brett Mullan, who robbed four bookmakers, was caught after giving his details to a ticket inspector.
