Where were the samples taken from?
A total of 62.7% were purchased in England, 17.1% in Scotland, 16.5% in Northern Ireland and 3.8% in Wales. Of these, 75% were from supermarkets and large retailers, 13% from medium sized retailers (independent and local shops) and 12% from small retailers e.g. farm shops, market stalls, butchers, milkmen etc.