Business Green: Sainsbury’s has today unveiled plans to invest a chunk of the £1bn it spends each year on business sustainability issues with Imperial College London in a bid to identify ways to accelerate carbon emission reductions across its stores. Justin King, the retailer’s chief executive, said in a keynote speech at the Base conference in London today that the funding was a “relatively small” part of Sainsbury’s annual investment budget, but would still represent a ” substantial” sum for the …