This assignment delves into the intricacies of the UK business environment, examining various organizational structures, functional interrelationships, and the impact of macro-environmental factors. It analyzes three distinct organizations: Network Rail (public), Marks & Spencer (private), and Amnesty International (voluntary), highlighting their legal structures, departmental functions, and strategic considerations. The study further employs PESTEL and SWOT analyses to assess the macro-environmental influences on Marks & Spencer, revealing its strengths, weaknesses, opportunities, and threats. By exploring the interplay between micro and macro factors, the assignment underscores their significance in shaping business decisions and strategies.