Telegraph: Shopkeepers say customers are “panic-buying” armfuls of the 100 watt bulbs, which are becoming increasingly scarce since many supermarkets agreed to phase them out ahead of the end-of-August deadline. The ban on sales is supported by the government, which wants consumers to switch to low energy compact fluorescent lights (CFLs) to help meet its climate change targets. CFLs typically cost more than four times as much as a traditional incandescent bulb — starting from £2 each …