Last week I happened to pass the UK on a Saturdaymorning.
After listening to all this "you are now 5NM east of xxx" for over 15 minutes I actually had to turn down the volume.
In Holland I used to make use of "Dutch Mil" when flying SE.
No need to occupy the 121.5
There are hardly no intentional calls from Professional pilots on guard. And yes, sometimes you make a mistake. But that is already contaminating the frequeny enough.
btw what do the Spanish pilots mean when they yell "auwa" the whole bloody time on 121.5 ?