Kate grew up in Dorset, studied Classics at Bristol University and then moved to London where she initially worked in advertising and PR before moving to Gartner, one of the largest information technology research organisations. At Gartner she was involved with marketing, research, strategy, event organisation and business development on an international basis. In 1999 she married Klaus Grønholm, a Danish citizen, and together they formed their own company, K-Square Ltd, focusing on marketing and business development for IT companies. In 2014 Kate stepped back from her commercial activities to allow her to become more involved in Charity work, specifically as Chairman of The Friends of Fulham Palace (Registered Charity No.277797).
Kate & Klaus have their main base in Fulham, London but they also have a summerhouse in Asserbo, Denmark where they spend an increasing amount of time.