I did try to overwinter a couple of plants last year, but they became so poorly that I gave up on them. This year I plan to do it properly and they will move into my conservatory as the weather goes down hill, so sometime next week! :o I was reading about chillis today in my RHS mag, and they say you can keep them going for a couple of years, but after that production becomes low and the plants become diseased, so their advice was start new ever year.