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How the top five contractors would look …
  Contracting turnoverTotal turnover
Balfour Beatty£5.3bn£5.8bn
Carillion£2.3bn£4.7bn
Laing O’Rourke£2.1bn£2.3bn
Morgan Sindall£1.8bn£2.5bn
Kier£1.2bn£1.8bn