No-one can fail to be aware of the current food scare this week with hundreds of foods being recalled due to contamination with Sudan 1.

Sudan 1 is normally used as a colouring in solvents, oils, waxes, petrol, and shoe and floor polish, and experts have warned it could contribute to an increased risk of cancer.

It has emerged that the Worcester sauce containing it is used in a huge range of foods. My question is, why?