[SM] I can heartily recommend Slimming World. It's effective, and it's a very healthy way of eating (and supposed to educate you away from the way of eating that made you fat in the first place). I haven't felt as well as this for yonks. If you can't bear to go to a club meeting (too many echoes of 'The League of Gentlemen' and their sketches of the victimisation at the Fat Club meetings) then do it online, and join the Facebook Group that acts as an online meeting.