The name of the group is pretty self-explanatory. You should join if you live somewhere around Manchester and like reading and discussing fantasy/scifi.Meetup membership is capped at 50 (typically meeting attendance is 6-8 not 50), but feel free to come to the book discussions whether you've officially joined or not.
I send out a Google Hangouts link to anyone who RSVPs ~10 minutes before the official start time. I'll also post it in the comments below.
Vote for December's book: