This paper looks at creating legitimate thinking spaces for teachers to explore their pedagogical beliefs and practices through collaborative writing. Based upon a project from a post compulsory Initial Teacher Training programme in the UK it will describe the process of working with teacher educators towards writing as part of a critical professional development process. Writing collaborativley for publication, a companion to a student research journal, has become significant not just for producing a useful resource but as a highly valued space for thinking and discussing teaching and learning. Teacher educators teach others to reflect, to be critical and to value their professional independence, yet there is little space for them to do this themselves. One participant in a recent writing day exclaimed it was the first space he had to think for years, whilst another said it was a vital space to reconnect with educational beliefs and pedagogical practices with others. This paper will explore using writing as a framework to support critical thinking, reflection and collaboration for professional development. It provides a case study to explore if using this method supports relevant, contextual and authentic professionial developmnent both for self development and and as a site for resistance to the overwork and deprofessionalised culture in post-compulsory teaching.