All good questions, DickKerrLadies. As for who was involved in getting the councils to implement the toolkit, there's a clue in the Warwickshire guidance linked to above:
The following local authorities and organisations have contributed to the creation of this toolkit: Barnsley Metropolitan Borough Council, Birmingham City Council, Derbyshire County Council, Doncaster Metropolitan Borough Council, Kent County Council, Leicester City
Council, Leicestershire County Council, Lincolnshire County Council, Nottinghamshire County Council, Oxfordshire County Council, Sheffield City Council, Warwickshire County Council, the Young Transgender Centre of Excellence at the Leicester LGBT Centre, and
Joe Butler at SEND Support (Special Educational Needs and Disability Consultancy and Training).
Special thanks go to Brighton and Hove City Council and Allsorts Youth Project for allowing some of the content of this toolkit to be based on their ‘Trans* Inclusion Schools Toolkit’, and to Gendered Intelligence for commentary on the final draft.
Weird, isn't it, how they seem to have consulted with a bunch of lobby groups but not, apparently, any lawyers or anyone with expertise in safeguarding?