Ellison has previously held a number of financial services client-side roles including, most recently, head of insight at Ecclesiastical Insurance. Before joining Ecclesiastical in 2004, she was senior research manager at Alliance and Leicester (now part of Santander) and also market research manager at Eagle Star Insurance (now Zurich Financial Services).

Charterhouse has also hired Philippa Whitham as an associate director working on, among other things, its continuous Business Banking Survey and the Customer Contact Survey. She was previously an associate director at Maritz Research, TNS UK and Infratest Burke/NFO.