Well I called ''Cycleworks'' in Petersfield today and explained the Brompton I bought four or five months ago from them now had a snapped chain. They said bring it in and if it's the chain they will replace it. I promptly dropped it in to them, the lad said I think it is just the power link (?) leave it with them. I went back within the hour, he said the chain was fine and it must have been a faulty link, to which he then said that'll be two pounds please. I said so you think it was a faulty link and that will be two pounds, yes he said. So I paid the two pounds and walked out of the shop that I thought was going to be my local LBS where I would buy my next bike, shame that.