This was in Scary-Go-Round. It is not currently very available, having been published and gone out of print and the original website having been thoroughly hacked. You might be able to find it on the wayback machine or similar.
Thankfully, Mildred has not consented to anything except lunch, and the Cormorant staff, while sleazy, lack the sense of privilege to give her any real trouble.
Yes; I suspect the Health and Safety Executive (HSE) are a small fish in the oceanic purview of a man who destroys evidence in response to someone taking a ticket.
The Famous Five would have predated the modern wave of young investigator magazines, so would never have been in the 15 Under 15. I imagine some mystery kids consider them to be #goals, while others think they sold out, and maybe there are stories of some of their more problematic attitudes which raise the question of whether they were just Of Their Time or if they went on record one too many times describing Enoch Powell as ‘very brave, in his way.’
This was in Scary-Go-Round. It is not currently very available, having been published and gone out of print and the original website having been thoroughly hacked. You might be able to find it on the wayback machine or similar.