White & Case and Slaughter and May have advised on the $8.8bn (£5.5bn) merger of subsea engineering and construction companies Acergy and Subsea 7.

White & Case acted for Acergy with a team led by City M&A partner Peter Finlay and New York M&A partner Gregory Pryor alongside Brussels competition partner Mark Powell and City partners Peita Menon (tax), Nicholas Greenacre and Stephen Ravenscroft (employment) and Gavin McLean (finance).