Karlsberg will ensure that the UK research and marketing insight consultancy continues to work closely with clients in providing an integrated qualitative, quantitative and analytics service while further developing McCallum Layton's analytics offer.
Karlsberg gained her PhD in statistics from the University of Sheffield and joined the agency in 2007.
Since her arrival she has been strategically involved on a number of high-level analytics projects for many of the agency's major clients.
Duncan McCallum, founding partner at McCallum Layton, said: "Whilst an analytics service is not something new to our agency, we have further developed our business to offer greater support to our clients in these tough times.
"Angela will ensure that we provide cutting-edge analytical support. We pride ourselves on delivering not just quality research, but actionable insight that clients can use to boost their bottom line."