After 13 years, I've finally enrolled for some French lessons! Apparently, there's a new scheme just started where the French government will pay for the teacher, provided the ex-pats will help the school children with their English on "one or two" occasions per year. Sounds good to me!
In fact, I did go to the local language college - http://www.carel.com on four occasions to suffer "Intensive French". This was where you spoke only French for 6 hours a day. Talk about baptism by fire! It certainly stretched the comfort zone, but the only problem was that it was VERY expensive - I'm talking £400 plus per week, and that was 5-6 years ago.