Add that to the current fashion on TV of not EQing personal mics properly, and you have a problem.
It's interesting to compare R4 and TV sound through exactly the same system off FreeView. R4 generally sounds as I'd expect it to - TV, on things like news and current affairs, often very lacking in top. And even on high budget drama. Like they're simply using the personal mics 'flat'. I do wonder if it's untrained people doing the sound balance these days - or equipment where it's difficult to access the EQ, assuming it has any.
In all my days in TV sound, I never came across any personal mic that sounded anywhere near 'right' without fistfuls of EQ. ;-)