This article discusses the impact of pandemic on sustainable practices at Marks and Spencer, their competitive stance, market positioning through SWOT and PESTLE analysis, and strategies to strengthen sustainability in the market. Marks and Spencer adopted a robust environmental, social and governance strategy, and a culture of health, safety and wellbeing. The company's products are preferred by customers over its competitors due to the holistic approach adopted towards sustainability. The changing needs of the customers can present numerous opportunities for the company to grow and develop.