James Thomson & Son Ltd was a grocer and victual dealer. The business had a grain mill in Longstone, Edinburgh and regular visits were made by horse and cart to the mill. Their oatmeal had won prizes at home and abroad. They had also exhibited and won medals for their oatmeal at the Edinburgh International Exhibition http://www.scotsman.com/lifestyle/heritage/lost-edinburgh-edinburgh-international-exhibition-1886-1-2895307 which was held on the site of the Meadows, Edinburgh 1886.