Didn't click re the OP's first line, the service isn't even using "RAF Volmet" as its callsign:-
https://soundcloud.com/thomas-woodro...0khz-mp3cutnet
It all started to go downhill when the old automated voice, (the MD of the software company legend had it), used to announce proudly; " This is Royal Air Force Volmet.......Royal Air Force Volmet"; was replaced.