Marks & Spencer (M&SP) is set to launch a new product line of women's designer gowns in the UK market. The company will employ various marketing strategies, including social media and internet, mail marketing, and publicity, to promote its products. M&SP will also utilize the four Ps of marketing: Product, Price, Place, and Promotion. Additionally, the company will target specific segments of the market, such as geographical and demographic segmentation, to effectively reach its desired audience.