The Crossrail archaeology programme has also unearthed its first Bronze Age finds - although these won't form part of the exhibition.
Two wooden stakes, cut by early London hunters with an axe, and a hammer stone have been discovered at excavations at Plumstead.
Historians believe these may have been used to build a large network of timber pathways across east London, which may have made it easier for hunters to catch animals living in the lush wetlands some 3,500 years ago.
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RMT members staged a protest outside Parliament to mark the anniversary of the first strike one year ago today.
The former mayor of Tower Hamlets, was forced to step down after he was found guilty of a string of corrupt and illegal practices.
The service is the first to be held in the singer's honour since the private funeral held by the family at Highgate Cemetery on March 29.