www.bbc.co.uk/news/uk-44686374
BBC Article announcing this policy intention from 2018:
'Gay conversion therapy' to be banned as part of LGBT equality plan
Including While the government did not offer a definition of "conversion therapy", its report said it "can range from pseudo-psychological treatments to, in extreme cases, surgical interventions and 'corrective' rape".
While conversion abuse (a better descriptor IMO) that is aimed at enforcing heterosexuality onto lesbian and gay people should absolutely be tackled and stopped, it’s worrying that given Stonewall’s expansion of the trans umbrella, what Stonewall then say in this BBC article:
’Stonewall says that "no one should be told their identity is something that can be cured".
More on that here: www.stonewall.org.uk/campaign-groups/conversion-therapy
Actually no. We know that some people will really urgently need proper professional psychological and medical help to deal with their gender dysphoria and identity struggles. Just giving them affirmation as a first line approach, is not going to help them. Theres nothing wrong or bad in recognising that and actually their needs for professional medical and psychological services to support them should absolutely be advocated for.
Also it is noticeable that the types of ‘conversion therapies’ listed, also include surgery and other aspects that can be involved in a gender-related transition process.
Maybe that’s why the government can’t give any definition of a coversion therapy 
while saying it must be urgently stopped.. because if they had to actually define this abuse, that would expose a divergence between the needs or experiences of trans people and the needs of gay and lesbian people.
Stonewall as the link above shows, apply conversion therapy to both same sex orientation AND to identity feelings.
So its almost looking as if it’s more important to keep the LGBT label together, than it is to actually help some LBG people avoid or recover from specific abuse aimed at eradicating their same sex orientation? 
And while it’s awful that some trans people may have been targeted for this kind of abusive treatment, actually is it helpful to them or protective of them either, not to be able to name what is being done?
Why can’t we just say that sometimes with gender identity issues there also can be underlying mental health needs? This obfuscation approach of advocacy blurring the boundaries between sex and gender and pride and affirmation and mental ill health- it’s surely seems to make it harder for those who most need actual targeted support to be able to get it?
This are also some anti scientific and worrying ideas from professionals in this mix: ’Dr Louise Theodosiou of the Royal College of Psychiatrists, which "100% backs the ban", told the programme: "There's no evidence base to support this therapy. Your sexuality and your gender ID are inherent and there's no evidence base and no therapeutic treatment to change what is simply part of someone's nature."