Down here in the London area i'd pick out these events: Jan 2003 Thames streamer snow event. August 2003 heatwave - 38c! Can't forget that week in early August, i had to sleep with 3 fans! Jan 2004 thundersnow event - left central London on the tube, it was dry and cold, walked out of the station half an hour later near home and there was an almighty blizzard with over an inch having already fallen in just over 20mins. The snow stopped within an hour and there was mayhem on the roads. Probably around 4 inches of snow by the end. June & July 2006 heatwave - Incredible heat. Day after day of intense heat, with countless days over 30c. Feb '09 snow - The heaviest snowfall in this area since the legendary Feb '91 cold spell. 7 inches of snow fell in this area overnight, which is a rarity.