02 Aug 2018 --- Beatson Clark are supplying M&S with smaller, more stylish bottles for the supermarket’s own-brand salad dressing. The repackage comes after English Provender Company (EPC) conducted research for M&S which found that customers thought the existing salad dressing bottle was too big. As a result, they often threw away the unfinished product when they felt it had passed its use-by date, creating unnecessary waste.