This report provides a comprehensive overview of the fundamentals of travel and tourism, focusing on the UK market and the case of GSM Leisure Travel Ltd. It begins with an introduction to the tourism industry and its historical development, categorizing it into pre-1945, 1945-1979, and 1980-present periods, highlighting key milestones and current trends. The report then identifies and discusses different types of tourism, including special interest, niche, and mass tourism, along with their characteristics. It delves into tourism demand, analyzing factors affecting demand, different types of demand (actual, suppressed, and latent), and tourist motivations, including push and pull factors. The report also explores tourist behavior and typologies, examining factors that motivate people to travel, such as physical, cultural, status, and interpersonal motivations. Furthermore, the report reviews the elements considered when developing a new destination, particularly focusing on the 6 A's of a tourist destination. Finally, it identifies the key organizations involved in the tourism supply chain within the private, public, and voluntary sectors of the UK travel and tourism industry. The report concludes with a summary of the findings and references supporting the analysis.