Tesco had only just opened its first self-service supermarket, Asda was still known as Associated Dairies & Farm Stores and Morrisons was preparing to unveil its first town centre store. A lot has changed in grocery since 1957 - though not for Brian Jackson, who is celebrating 50 years' unbroken service with Booths. Jackson, 65, joined the north west supermarket chain at the age of 15 as an errand boy. He has worked at Booths' Preston store as a warehouse manager, but for the past 15 years has been the retailer's coffee roaster - roasting, testing, bagging and labelling around 200 bags of coffee a day. To mark his long service, Jackson, pictured here for a Booths' ad campaign, was introduced to Prince Charles when he visited Booths' flagship store in Keswick earlier this month. He plans to retire next year to spend more time gardening and walking.