Without trying to get myself shot down in flames. but the HSE although has an interest in safety for services such as HEMS or in my old case fire service HSE has guide lines but as the nature of the job is specific risk associated in the case of the fire service it was usual for the fire service to have and impliment specific SIPS/SOPS etc.
the service would look to the HSE for guidance but only when an incident/accident ocured did they become involved.
In the case such as this (HEMS) Instead of this being the fire service to be the specific govening body it would be the CAA .
it therefore would indicate that the CAA are at the for front of this decision i would find it strange if the HSE had any further interest other than the normal duty of care.
I may be completely wrong but i would be extremaly suppriced if this was HSE.
Sincerely
Bravo 99 (AJB)