British Psychological Society - responsible for the development, promotion and application of psychology for the public good, including how to find a psychologist  www.bps.org.uk 
CAHMS - specialist NHS children and young people's mental health services
http://www.swlstg-tr.nhs.uk/15-cahms

Counselling directory – connecting you with professional support www.counselling-directory.org.uk

NHS – UK government mental health advice website
http://www.nhs.uk/Livewell/youth-mental-health/Pages/Youth-mental-health-help.aspx

Royal College of Psychiatrists – Advice and resources for improving the lives of people with mental illness http://www.rcpsych.ac.uk/healthadvice/physicalandmentalhealth/childrenandyoungpeople.aspx