Mayor Boris Johnson has promised to look again at Crossrail construction safety after a worker was electrocuted.
During the Olympic construction, a collective agreement on health and safety was put in place between the construction firms and the unions. The mayor was asked whether a similar agreement should be introduced for Crossrail.
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Tributes have been left in Caledonian Road in Islington where 15-year-old Alan Cartwright died after he was stabbed.
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