A bidding war for the consultancy behind landmark projects such as the Sydney Harbour Bridge and London’s Tower Bridge is possible following the emergence of Japanese engineering giant Nippon Koei as a rival bidder for the company.

Last week, Nippon unveiled a 680p per share offer for London based design and engineering consultancy Hyder Consulting – 4.6 percent above an earlier 650p bid from Amsterdam based built asset consultancy Arcadis, which was previously considered by some to be a knockout bid. In a statement, Nippon President Noriaki…