Update
Very interesting reading.
I founded the pages for TCAA, TAAS, DLRAA and WNAA on Wikipedia. And if there is anything that can be added (and referenced) then I'm sure it would help the article. (Although I am firmly against TAAS and TCAA.)
I have stuggled with a Wikipedia user called 'taas' who frequently turns the page into a huge advert for the charities, and deletes criticisms. One guess as to what 'taas' stands for.
If you know how Wikipedia works you can view his additions on the history page of each article. They make funny reading.
And also has anyone heard of 'Lucy Air Ambulance', similar to TCAA?! Childrens specialist?!
Let me know.