Understanding Society User Support

Hi,

I was wondering if there was a restricted dataset that contained information on which county (ceremonial or metropolitan) each respondent lives in. I know this is available for local authority districts, and smaller geographies such as LLSOAs. However the project I’m currently working on needs the county of residence. If it is not available, do you know of any algorithms that map from smaller geographies to larger ones (i.e. LADs to counties)?

Thank you,
Luke