Press Association: The global economic downturn may be starting to bite, but saucy Britons have hit on ways to keep costs down. Two out of three people living in the UK would snuggle up in bed with another person to cut their heating bills, or share a shower to save water, a poll for the energy Saving Trust found. And 68% said they would happily tuck in to leftover food to eliminate waste. The survey, released at the start of Energy Saving Week, asked people across Europe about their …