**Supply Chains, Networks and Markets: A Strategic Analysis of Marks and Spencer in the UK Retail Sector**

AbstractThe purpose of this research is to examine strategic organisational practices andnetwork- based supply chain structures of Marks and Spencer (M&S) within the retailmarket of UK. The investigation emphasizes on changing nature of consumer responsepattern, heightened market rivalry and supply chain structural transformation haveshaped the long-term strategic orientation of the organisation. Central emphasis isplaced on the significance of network based supply chain Collaboration and theconstrained encountered by M&S in managing B2B and B2C relationships. Theinvestigation also explores the effect of the COVID-19 pandemic on supply chainoperations and market based strategic positioning .Using secondary data andestablished strategic frameworks, the study identifies key organisational competenciesand evaluates strategic responses adopted by M&S. The outcome demonstrates thesignificance of supply chain collaboration, resilience, and strategic congruence inpreserving competitive advantage in a rapidly changing retail landscape.KeywordsSupply Chain Networks; Retail Strategy; Marks and Spencer; B2B and B2CRelationships; COVID-19; Market Expansion; Supply Chain Resilience.