Who wrote this shite?
The BACP Best practice guide which contains the definition in OP was written by Dr Meg-John Barker
Blog:
(extract)
"When referring to me it’s great if you can use the name ‘Meg-John’. I’m also happy for people to use ‘MJ’ for short.
My pronoun is they, them, their, so I’d prefer that you said ‘they are the author of Rewriting the Rules’, for example, rather than ‘she/he is the author of Rewriting the Rules’. You can see more examples of how ‘they’ can be used in the biographies above, and you can find out more about the singular they pronoun for non-binary people here.
I’d like to be referred to in non-binary gender terms, for example saying ‘we’ve got all women and non-binary speakers tonight’ (rather than ‘all women’); saying ‘Meg-John is a person who has done…’; calling me ‘mate’ or ‘friend’ rather than ‘madam’, ‘sir’ or ‘miss’; referring to a group I’m in as ‘folks’ or ‘guys’ rather than ‘girls’ or ‘ladies’, or introducing an event with ‘friends and colleagues’ rather than ‘ladies and gentlemen’."
www.rewriting-the-rules.com/about-me/
OU profile:
(extract)
"They have also written numerous books, articles, chapters, and reports for scholars and counsellors, drawing on their own research and therapeutic practice. In particular they have focused their academic-activist work on the topics of bisexuality, open non-monogamy, sadomasochism, non-binary gender, and Buddhist mindfulness. Barker is currently a senior lecturer in psychology at the Open University. They co-founded the journal Psychology & Sexuality and the activist-research organisation BiUK, through which they published The Bisexuality Report. They have advised many organisations, therapeutic bodies, and governmental departments on matters relating to gender, sexual, and relationship diversity (GSRD)"
www.open.ac.uk/people/mjb2276
Wiki
(extract)
"Meg-John Barker (born 23 June 1974) is an author, speaker, consultant, and activist-academic. They have written a number of anti self-help books on the topics of relationships, sex, and gender, as well as the popular comic book Queer: A Graphic History, and the book The Psychology of Sex. They are the writer of the relationships book and blog Rewriting the Rules, and they have a podcast with sex educator Justin Hancock.
Barker is currently a Senior Lecturer in Psychology at the Open University in the United Kingdom with a focus on psychotherapy. Barker holds a PhD in Psychology from the University of Nottingham, and is also a UKCP accredited psychotherapist specializing in sex therapy and relationship counseling.
Barker has written and/or edited some of the first academic collections on open non-monogamy, bisexuality, non-binary gender and BDSM. They were editor of the journal Psychology & Sexuality from 2010 to 2017, and lead author of The Bisexuality Report and the BACP document on Gender, Sexual, and Relationship Diversity." (continues)
en.wikipedia.org/wiki/Meg-John_Barker
The author is the partner of Edward Lord who also identifies as non-binary see recent threads:
www.mumsnet.com/Talk/womens_rights/3323475-Surprise-The-Masons-now-welcome-Transwomen-but-not-women
www.mumsnet.com/Talk/womens_rights/3317922-City-of-London-Corporation-consultation-is-out-this-covers-Hampstead-Ponds
www.mumsnet.com/Talk/womens_rights/3316098-Childrens-Convenor-Elected-Councillor-calls-women-cunts-on-Twitter-rants