The Crossrail 2 - a new rail link between south west and north east London - project has received overwhelming support from the public according to public consultation.
The Mayor of London has hailed the project as crucial in relieving congestion, boosting economic growth in the capital, and offering a vital interchange if the high speed HS2 national rail service goes ahead.
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Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
The family of Oliver Dearlove urged people to "think again" before using their fists, as the man who killed him began a six-year jail term.
London Fire Brigade took Southwark Council to court on four charges in relation to safety breaches at Lakanal House in Camberwell.