SJ Berwin merged with the Hong Kong-headquartered law firm King & Wood Mallesons on 1 November 2013, becoming the fourth member of its Swiss Verein structure.

In January 2017, King & Wood Mallesons went into administration, which to that point was the biggest UK law firm collapse.

[7][8] SJ Berwin advised Lion Capital LLP on a string of deals including the on the acquisition of fashion chain AllSaints from Icelandic banks Kaupthing and Glitnir in 2011, and the £1.4 billion acquisition of French frozen food business Picard Surgeles in 2010.

[11] In 2010 the firm advised British Land on forming a £2.13 billion joint venture with NYSE listed global asset manager The Blackstone Group for British Land's holdings in the Broadgate Estate, the premier 30-acre City of London office estate.

[12] The firm advised SITA, the specialist in air transport communications and IT solutions, on a seven-year deal, valued in excess of $2 billion, to broaden its existing partnership with Orange Business Services.