This presentation covers PEST and Porter's Five Forces analysis of Marks and Spencer, a British multinational retailer. It explains how to evaluate external forces that could influence business functions. The PEST analysis covers political, economic, social, and technological factors. The Porter's Five Forces analysis covers the threat of new entrants, threat of substitute products, bargaining power of suppliers and customers, and competitive rivalry. The presentation concludes that it is essential for organisations to analyse their market environment through implementing PEST and Porter's Five Forces analysis.