Thanks Alison that's great advice. I agree totally with the over cautious freezer block idea. Also thank you for saying that about my husband, I don't really see it myself and probably take him far too much for granted. This morning baby wouldn't sleep past 6 and we were determined to start the day (E) at 7 so he took him out in the buggy to sleep, apparently he circled around a deserted station as it was the only warm place to be! Bless him!