This chapter is presented in two main sections, both of which are concerned with problems of deﬁnition. We begin with the question of nomenclature, noting the wide range of variables which might be involved in any deﬁnition. We then consider the difﬁculties inherent in seeking to separate the phenomenon from its wider social context. In the second main part, we go on to examine how much football hooliganism there actually is – and has been – in Britain. We critique the problems inherent in the trying to interpret the ofﬁcial statistics, noting that the phenomenon appears to be both declining (from what was anyway a low base) and changing. We then consider the issue of disorder involving England fans abroad.