She will succeed Kate Collins, who was promoted to chief executive of the charity in March.
Since Tait took over leadership of the fundraising team at Battersea in September 2010, the charity’s income has grown from £10m to nearly £40m and she has overseen the introduction of a gala ball and a mass-participation fundraising event, a statement from TCT said today.
She is also a trustee of the Institute of Fundraising and currently chairs its standards advisory board.
Tait said in a statement: "I’m thrilled to be joining the Teenage Cancer Trust at a very exciting time. I greatly admire its amazing work supporting young people with cancer and their families. I am committed to doing all I can to help increase its impact and look forward to working with its fantastic fundraising team."?
Collins said Tait was a "talented, dynamic and people-driven fundraising leader who has achieved fantastic results throughout her career".
She said: "I am thrilled that she is bringing her skills, passion and experience to the Teenage Cancer Trust and am confident that, under Liz’s leadership, our fundraising will go from strength to strength so we can expand our work and support every young person who needs us."