Thank you everyone for your great replies.
Sewgull, we may well do just the edges as you suggested. We usually make bed sized quilts but no reason not to put a throw in there too.
Sherry, pillowcase style (as our group calls it) is when you sew the layers with front and back right sides facing and the batting on one side. Sew around the edges but leave an opening at one end. Then you turn the whole thing inside out through the opening. Sew up the opening and you then have the layers in the right order with no need for binding. In our group we then sew around the edges for extra stability. We then tie the quilts.