The new office is headed by Audrey Cassels, who joins from her role as director of business development at Benchmark PR.
The agency launches with a new brief from VisitScotland to promote its Perfect Experiences campaign. The campaign will be aimed at London and the South West to drive visitors to Scotland.
The agency has also picked up a brief to promote the Fife Alcohol Partnership, which is a project aimed at promoting responsible drinking.
Cassels has more than 13 years' consultancy experience across retail, property, consumer and B2B. She has also worked in-house at Rangers Football Club. She will report into agency founders Julie McGarvey and Cameron Grant.
3x1 specialises clients include Highland Spring, Macdonald Hotels & Resorts, Diageo and The Entrepreneurial Exchange.