The aim of this thesis is to identify the different factors that influence the transition to a circular economy (CE) leaving behind the conception of a linear economy. Understanding the word ‘factor’ as drivers or barriers for its transition. To identify these factors, the project has followed a determined methodology. Firstly, a literature review has been carried out, by doing so, the most relevant factors in the last two years have been selected. Secondly, semi-structured interviews have been conducted, and as such, valuable information was collected, and in addition, the information gathered in the first step was corroborated with the respondents. In other words, the project has been approached from an academic and practical perspective in order to gather the most real information.