Complex sentence: Since 1990, Agutter has brought up her son and her work has been in sound recordings and supporting charities, notably the Cystic Fibrosis Trust, of which she is a patron (she is also a carrier of the disease).
Split into simpler sentences: Since 1990, Agutter has brought up her son and her work has been largely in sound recordings. She has also worked in support of charities, notably the Cystic Fibrosis Trust, of which she is a patron (she is also a carrier of the disease).