Industry leaders have called for "fundamental change" to improve collaboration and risk management after the performance of construction's biggest firms was laid bare by this year's CN100. The CN100, which covers financial results from the UK's largest contractors, ranked by turnover, showed the top 100 reported an average pre-tax margin of 2.8 per cent - up from 2.4 per cent in last year's CN100 and 2.1 per cent in 2015's CN100.
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