They're great bikes, especially the older ones with the UK-built frames. Mine is from the mid 80s, I think. I had it resprayed about ten years ago and the guy who stripped it (George Longstaff, who knew a thing or two about frames) said there wasn't any rust at all anywhere on it. I spent about twice what the bike was worth on paint and bits for it and it was worth every penny. If you can get one for £200 or so (and you could probably get one cheaper), go for it.