This introduction presents an overview of key concepts discussed in the subsequent chapters of this book. The book discusses the needs of every child. It describes lesbian, gay, bisexual and transgender (LGBT) issues where they touch on early years work. The book focuses on people who have defined their sexuality, either workers in the setting or parents who use the setting, and positive images and ethos that show children that families and people of all kinds are respected and considered valid. It examines family structures in connection with LGBT diversity. The book explains the way that families where individuals are LGBT can be isolated in the United Kingdom. It presents LGBT to express a willingness to think about a wide definition of the lesbian, gay, bisexual and trans community while at the same time root it within the realms of practitioners' experience in early years settings.