The UK needs to find another dedicated frequency for practice DF steers.
The immature fart noise makers need to grow up.
Couple that with the accidental in range calls.
The occasional real emergency or PAN PAN
The fairly common mis handled frequency change/fly out of range issue
Air to air congestion compared to air to ground traffic.
And of course, the gossip mongers about the new bar to meet up in.
All these seem fairly minute separately , but when coupled all together, 121.5 is basically useless in the UK because most everyone has it turned down so they can monitor the active ATC frequency. I pity the poor soul that truly needs some help and can't raise anyone because everybody else has it turned down.
There are so many countries and operation departments within VHF range, that enough honest mistakes tacked upon all the unprofessional antics makes 121.5 not what it should be. Those that take this issue lightly need to sit back and reflect on this issue for a while.
It's not just the UK, but any HIGH traffic area in the world suffers from the same ailments. To me, the UK does seem to be the worst.
For the record, I spend less than 2% of my time flying in the USA.