Ruth said:

That's understandable, Leveller. A lot of information about what the society does is disseminated through EDS, which of course you only receive as a member, or if you buy it at a festival

can I just point out that you can take out a subscription to EDS without taking out full membership, it costs £15 for a year (4 copies) which is what I have done for the last few years, though I did in fact join up this year.