Pete Zahut/Wiley
The use of 121.5 in the UK for practice pans and training fixes is officially approved (and encouraged) by ATC for practice and other operational reasons.
Training fixes are also a very good way of VFR flights sense checking that they are avoiding controlled airspace on murky days and there is an awful lot of controlled airspace and murky wx in the UK.
Suggest that if you wish to fly in our airspace you get used to it and stop whingeing, otherwise please exericse your license privileges elsewhere.