Building bosses have spent the weekend drawing up plans in response to threats by the government to shut down sites in London amid concerns over the numbers of workers using public transport.

An emergency summit on the issue was held on Friday afternoon with around 40 chief executives of London’s biggest contractors along with officials from the business department and representatives from London Underground working out how to cut the number of builders using the network.

Concerns raised by the government about Tube overcrowding prompted Construction Leadership Council co-chair Andy Mitchell to send out an email last Thursday evening warning firms of the “very real risk” of ministers imposing restrictions if the situation did not improve.

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