BEagle - thanks for adding the part about the test. I did know but hadn't made it clear in my post.
Although as I said, in an ideal world all IMC flight would be with a radar service it just isn't possible all of the time. I don't agree with the suggestion that it should be banned, there are alraedy too many restrictions on flying in the UK/Europe, and banning things when there are no statistics to illustrate the danger is a dangerous precedent in my opinion.