Co-creative transactional analysis was developed by Graeme Summers and Keith Tudor, who published an article in the Transactional Analysis Journal in 2000. Its focus is on developing a present centred relationship between two or more people. Building on field theory, it suggests that the relational field generated in these interactions is more than the sum of the parts generating it. (eg. 2+2=2.5!). The relationship (or way of relating) requires intimacy and non-defensiveness where the people involved share the responsibility for maintaining the present centredness of the relating, and treat themselves and the others in the relationship with unconditional positive regard and OK-ness at the existential level. This way of relating challenges our script beliefs and our non-conscious defensive patterns that we generated when we were small in order to keep ourselves safe, get strokes and to predict the future. The concept of the integrating Adult, developed by Kieth Tudor, supports the present centredness needed to maintain the positive relational field by supporting each person to choose behaviours appropriate for the moment. The theory also suggests that script is an ongoing and dynamic process which is generated dynamically and continues to be subject to change, and that when those changes occur they inevitably impact on the dynamic script of those around us. The theory also embraces social constructivism, wherein we are able to review our stories about our past and retell them in the present, with our wider experience of the world, thereby changing our past as well as changing our future. Over the 20 years since the original article, the theory has been developing further, and continues to be dynamic and to challenge some of the traditional TA theories. Over this weekend we will share our knowledge and experience of working with co-creative TA, and invite you to experience this very different way of being in relationship (or relating).