LONDON, 2016-Sep-15 — /EPR Retail News/ — Today (14 Sep 2016) Marks & Spencer’s Plan A Ambassador Joanna Lumley hosted her very own Macmillan Coffee Morning at M&S High Street Kensington, as part of the company’s headline sponsorship of Macmillan Cancer Support’s World’s Biggest Coffee Morning. The extra special coffee morning kick started a season of…