Orosnjak (pictured) was previously a senior partner and head of client relations and marketing. She first joined Hall & Partners as research director in 2005 but spent several years at Kantar Millward Brown before returning to Hall & Partners in 2014.

She has held a number of other roles at research agencies both in the UK and South Africa.

Vanella Jackson, global CEO of Hall & Partners, said: “During her seven years at Hall & Partners, Branka has built long-lasting relationships with some of our largest clients. With her in-depth understanding of our business, she plays an integral role in shaping the future of their brands and communications.”