The UK’s energy and natural gas demand is set to jump at the start of next week following an unusually warm start to the year in Britain and most of Europe. Temperatures are expected to average around seasonal norms early next week, with London set for 6.5 degrees Celsius, or 43.7 F, according to forecasts from Maxar Technologies cited by Bloomberg. This would be only slightly above the average for this time of the year compared to this week’s temperatures, which are 5.2 C above seasonal averages. So far this year, Europe has enjoyed…