This NHS page is for 'gender confused' teenagers:
https://www.nhs.uk/live-well/trans-teenager/
The first external link is to 'tranzwiki'
'You can find charities and support groups on the Tranzwiki page on the Gender Identity Research & Education website.'
https://archive.is/xRdV6#selection-1337.0-1337.16
The 'tranzwiki' includes links to various groups for trans identifying people, including:
'Trans Bare all'
'As one of the founding principles of TBA is around supporting body confidence, our events include naked space in which everyone present is welcome to wear as little or as much clothing as they feel comfortable in. As Lee has described, “We found that when people took their clothes off, the conversations changed. Because they had already bared their physical self, they were more open to baring other stuff as well.”'
https://www.transbareall.co.uk/weekends