Understanding Society User Support

I contacted ONS on 25th March following its recently published report on wellbeing measures and job status but was advised that they can not provide more detailed information and have pointed me to you.

Have you done any analyses of those who are self-employed, that I can look at?

Based on the recent ONS analysis of well being and job satisfaction I wanted to learn if you could provide any details that compares the well being and job satisfaction of those classified as self-employed to employees, and if you have any trend data?

Is this data is available by local authority, region or for UK only?
Thank you