 This observational study will provide information on current practice and outcomes that are likely to be used in national guidance, to inform future research and to provide information about previous patients experience to women undergoing ovarian cancer surgery; descriptive and exploratory analyses will be carried out to provide maximal information to inform policy and design future research. The investigators anticipate comparing QoL and other outcomes in three groups - women treated with standard surgery with no residual disease less cancer load, those treated with standard surgery with residual disease greater cancer load and those with extensive surgery and no residual disease with greater cancer load and use of surgery with the aim of overcoming this. 