The Home Affairs Committee report: Child Sexual Exploitation and Grooming Report suggested  Mandatory Reporting be considered – Paragraph 130:

‘We recommend that the Government commission work to examine the feasibility of introducing a  statutory duty to co-operate and share information to tackle child sexual exploitation. We also recommend that the Government examine the Florida Protection of Vulnerable Persons Act passed in 2012 in order to ascertain whether the mandatory reporting of child abuse could, and should, be implemented in England and Wales.’

You can read the full report here.

The Government did not undertake a feasibility, instead it undertook a public consultation which was designed to achieve one outcome – rejection of MR by respondents. which it achieved.