Brian,you have very little time indeed to get that tax return in. Mudcat posting is displacement activity!
I remember well Harry Boardman's club - those that were part of it will never forget what a great platform it was for trying out newly-unearthed songs and talking about what we were doing about finding songs and how & why we wanted to sing them.
As for the distinctions between traditional and revival singers: I believe there may still be some traditional singers left in the forgotten corners of the UK. But, as the venues for singing traditional material disappear with piped music, big screen TV and 'live bands' taking over from informal pub sessions I reckon there will be fewer and fewer places for such singers to be heard. So there will be precious few - if any - singers learning songs in the traditional way.
If we want to keep 'traditional' song & music alive we will have to rely much more on artificial methods of transference of the tradition. So instead of aural transmission - listening to someone sing right in front of us, as in a pub or in our homes - we will use electronic transmission through recordings or paper transmission through notation and text.

There is much to be said for listening very carefully to recordings of traditional singers ( such as the wonderful selection on Voice of the People) to understand how songs were sung by the transmitters of this material. We should also understand that many of these singers were recorded in later life and the recordings may not be an accurate representation of their vocal skills in the prime of their lives.

There is also a great deal to be said for digging into the collected texts and notated material ( of which there is a huge wealth, much lying in archives waiting to be unearthed) so we can find out what was being sung by traditional singers of a hundred years ago. The variety of songs which I have discovered in my small burrowings into the archives is staggering. This is where I get most of my 'new' material now.

I firmly believe that it would be such a waste of the efforts of those dedicated collectors of last century who carefully preserved on paper what they heard being sung if their collected songs & tunes are not put back into circulation. I do not say put back into the tradition because I am convinced that the old aural/oral method of transmission is irreparably broken.

Mary