This report provides an overview of the built environment and Thames Tideway Scheme, covering various sectors in the construction industry, project life cycle, roles of professional bodies, and social and financial benefits of the project to the UK economy. The report highlights the importance of the construction industry in the UK economy and the contribution of Thames Tideway Scheme in controlling the overflow of raw sewage rainwater. It also discusses the social benefits of the project, such as employment opportunities and affordable transportation, and the financial benefits, such as revenue generation and contribution to the GDP.