Some of the industry’s leading event organisers were treated to an exclusive preview of Somerset House’s largest and most versatile indoor event space at an open house event on 19-20 April.   The 1,059sqm Embankment Galleries, which run the entire length of the building’s South Wing, have previously been used for exhibitions such as Valentino: Master of Couture and Isabella Blow: Fashion Galore.   Between September 2017 and February 2018, the galler...