Tesco is a British multinational retailer that started as a UK grocery store but has since diversified globally and into other products and services. It faced early issues with perceptions of cheap quality but addressed this through a new brand campaign of "Every little help" along with realigning its supply chain. The introduction of its Clubcard loyalty program in 1995 helped Tesco better understand customers and boost loyalty. These transformations established Tesco as the UK grocery market leader, and it has continued to expand internationally and through new offerings such as broadband, banking, and mobile services to maintain its position as one of the largest retailers worldwide.