As far as I am aware, there are no specific regulations in this regard. In using social media, a member of a council should make it clear that the views they express are personal and not those of the council. Although not specifically applicable to personal life, it is helpful to bear in mind the Nolan Principles and the Code of Conduct, which cover issues such as the need to treat others with respect and not conduct yourself in a manner that could reasonably be regarded as bringing your office or authority into disrepute.