Useful Links

http://www.itaa-net.org/
  The ITAA is a nonprofit educational organization with members in over 65 countries whose purpose is to advance the theory, methods and principles of transactional analysis.
   
http://www.ita.org.uk/
  The professional body that sets standards of competence and ethical practice for qualified and training Transactional Analysts in all TA fields in the UK.
   
http://en.wikipedia.org/wiki/Transactional_analysis
  From Wikipedia, the free encyclopedia offering an extensive view of TA and includes links and a discussion forum
   
http://www.bacp.co.uk/
  British Association for Counselling and Psychotherapy
   
http://www.cosca.org.uk/
  The professional body for Counselling and Psychotherapy in Scotland