That's interesting MtheGM: I always believed semaphore to be the origin of what is now called the Peace Symbol, although I read recently that it represented a person holding their arms in an attitude of despair.
Leaders were Bruce Kent (still around) and Canon Collins from St Paul's Cathedral. I think Bertram Russell was a member but formed the breakaway 'Committee of 100' I recall Pat Arrowsmith and a local guy called Sharpy Shaffer from the University (spelling probably wrong)
We had a small group in Rainhill (hardly the centre of the universe!) which is about 10 miles or so from Liverpool. The leader there was only about 16 or 17 but he invited the Spinners to give a concert at the local school. This they did for only their expenses. Nice to see sincerity and lack of greed for once!
Doc John