Publications . Weighing up the options . Keeping it in the family . Food & Drink Processing & Packaging , Creating industrial history since 1715 . BBC News, Report list oldest Scottish family firms Herald Scotland, Family businesses must ‘get more recognition’. / Mark Williamson, Group Business Correspondent Scottish Financial Times, Scotland’s oldest family-run firm turns 300 Weighing Review, Scottish Weighing Company John White and Son Ltd. is celebrating its 300th Anniversary. The Scotsman, Oldest ever working weighbridge found in Scotland Interface, John White approached Interface – The knowledge connection for business, to get support to develop its mobile weighing systems for a range of vehicle types.