I know it's been discussed on Pprune before, but I have to agree with pete zahut regarding "Practice Pan". Unbelievable that the Brits don't have a second, discrete frequency for these practice emergency calls which result in my turning 121.5 off damn near every summer Saturday or Sunday I fly into the very busy UK airspace.
They defeat the purpose of 121.5 as a guard frequency for the great majority.
Standing by for incoming....