Logging Stonewalls no-shows is a very good idea.
Can’t believe that a radio studio is too hostile and intimidating for the poor things, but training sessions with schools, businesses, NHS are fine and dandy. The exact same questions and issues are likely to come up in a training session, however, unlike in an interview, Stonewall are in control of the narrative.
If Stonewall are incapable of representing their own views publicly, the views upon which they are campaigning for changes to the law, then they are woefully unfit for purpose and should have their funding removed.