Sylvia Anderson (née Thamm, born 25 March 1927) is a British television and film producer, writer and voice actress, well known for her collaborations with Gerry Anderson, her husband between 1960 and 1981. In addition to serving as co-creator and co-writer on their TV series during the 1960s and early 1970s, Sylvia's primary contribution was character development and costume design. She regularly directed the bi-weekly voice recording sessions, and provided the voices of many female and child characters, in particular Lady Penelope in Thunderbirds. The Andersons divorced at the start of the 1980s following a five-year separation.

Life and career

After graduating from the London School of Economics with a degree in economics and sociology, Sylvia Thamm became a social worker and emigrated to the United States to live with her first husband, an American golfer. Returning to the UK with a daughter, she joined the newly founded and short-lived Polytechnic Films as a secretary in 1957. There, Thamm would meet Gerry Anderson, an editor and director. That year, when Anderson and his business partner Arthur Provis created AP Films following Polytechnic's collapse, she joined them on the board of directors of the new company, alongside their colleagues John Read and Reg Hill. In 1960, Thamm and Anderson married, after which she played a wider role in production duties.