Thanks all for your replies. I took the plunge and joined for £64.95 :O - though this does include 7 issues of slimming world magazine over 12 months. So far I'm loving it !!!!
Classes didn't work for me as it was all about just going round the group, clapping everyone at their 1lb weight loss. So last time when I joined a couple of years ago, I just got the books and ran - but this didn't work as I struggled to find out the syns of foods.
I've only been joined 24 hours but I'm in love already! I've found out the syn values so easily of a lot of the items in my cupboards, and was surprised at how many of the items I had I could actually eat, whereas without the syn calculator I would have just dismissed them and stuck to a jacket potato and salad for the 6th night in a row.
Obviously this is just day one, and I haven't even lost yet, but I think I'll get on well online and am feeling really optimistic this time around!