Anarkali Musgrave acted for the Children’s Guardian in the recent appeal matter, Re: L (A child) [2019] EWHC 867 (Fam).
She has also written an article for Family Law Week on this matter, discussing lessons to be learned for matters involving parental alienation and intractable hostility. In her commentary, Anarkali writes on change of residence, the test for transfer, and obtaining ascertainable wishes and feelings.
You can read her article here: https://www.familylawweek.co.uk/site.aspx?i=ed201173.