Background: Environmental problems are a worrying phenomenon, and there is a call for action. One way to face these problems lies in sustainable entrepreneurship. There is an increase in sustainability-oriented incubators supporting these sustainable entrepreneurs on their entrepreneurial journey, using various support systems. However, there is little research available about the support systems sustainability-oriented incubators offer, the importance of these support systems, and the influence of entrepreneurial stages. Purpose: With our study, we provide sustainability-oriented incubator managers with insights into the importance of different support systems, the frequency in which they are offered and the role of different entrepreneurial stages. This allows sustainability-oriented incubators to support their tenants better and, therefore, positively influence sustainable entrepreneurship.  Method: A single case study method has been applied by using a mixed-method approach of qualitative semi-structured interviews and a quantitative questionnaire which was filled in prior to the interviews by the participants. In total, nine participants were interviewed, consisting of seven incubator tenants and two incubator managers. Conclusion: This research has found a high level of importance and frequency of business model support and market research support, irrespective of the different entrepreneurial stages. This implies a constant reiteration process from sustainable entrepreneurs, demanding a strong-intervention role from the sustainability-oriented incubator. Furthermore, this research has found the shortcomings in using the effectuation model for analysing entrepreneurial stages and suggests a different application.

This thesis contributes to our knowledge on the emergence of environmental entrepreneurs. The study is guided by the research question, “how do UK environmental entrepreneurs start to form their distinctive environmental entrepreneurial thinking” and analyses the development of the environmental entrepreneurial mindset in the UK, through a theory of practice perspective. Based on a three-stage data collection process (preliminary focus group, semi-structured interviews and life stories), the study (1) conceptualises the construction of the environmental entrepreneurial mindset, (2) investigates the experiences of constraints for practice and (3) analyses differences in habitus and constraints on the basis of the sampling dimensions, type (social environmental and commercial) and gender (male and female). The study was undertaken under a social constructivist perspective and follows the naturalistic paradigm (Guba, 1978). The rigour (or trustworthiness) of the qualitative approach has been established according to perspectives by Mason (2001) and Guba and Lincoln (1985). The empirical basis of the study is comprised of a three stage design of discursive interviews, involving overlapping collective (focus group) and individual (life stories, in-depth interviews) data collection techniques, with a partly gathering structure (through semi-structured questions). A preliminary focus group identified key themes relevant to the study’s objectives and the concepts of the theory of practice (field, capital, and habitus). Three life stories refined the themes and analysed them within the context of entrepreneurs’ lives. The two stages enabled the development of questions targeting themes for the in-depth interviews and the cross case content analysis. For sampling purposes, the Maximum Variation Sampling (MVS) strategy was employed, which enabled identification and analysis of common and divergent themes (Miller & Crabtree, 1999) and by over-coming the limitations of the sample size, it provided a conditional representativeness. The findings show that environmental entrepreneurs accumulate divergent forms of cultural, social and economic capital, which shapes their entrepreneurial and environmental mindsets, triggering the creation of a disposition (habitus) towards setting up an environmental enterprise. Studying the formation of the environmental entrepreneurial mindset addresses a relevant knowledge gap and offers theoretical and methodological contributions. It also confers implications for practice, with a particular reference to entrepreneurial education and policymaking.