ACCREDITED ONLINE PSYCHOLOGY DIPLOMAS

Develop Your Career in Mental Health

Evidence-Based Training Directed by Dr. John Crimmins (PhD)

Any 3 of our courses for the price of one.

GET 3 OF OUR ACCREDITED DIPLOMA COURSES FOR ONLY £395.

Any 5 of our courses for £595.

GET ANY 5 OF OUR ACCREDITED DIPLOMA COURSES FOR ONLY £595.

ALL 14 OF OUR COURSES FOR ONLY £995.

THIS OFFER INCLUDES OUR ADVANCED DIPLOMA IN PSYCHOLOGY.

With over 25 years of clinical experience, Dr. John Crimmins has designed these programs to move beyond academic concepts and into real-world results.

Whether you are a healthcare professional seeking CPD accreditation or a career-starter building a credible foundation, our curriculum provides the practical toolkits needed to make a genuine difference in people’s lives.

Dr. John Crimmins PhD - Lead Tutor and Author at The Behaviour Institute

Our Accredited Mental Health Diploma Courses

Mix and match any of the below courses for our bundle offer

Build a Career in Mental Health with Expert Guidance

Accredited Training, At Your Pace.

Gain lifetime access to evidence-based curriculum designed by Dr. John Crimmins. With no fixed deadlines, you can balance your professional development with your current schedule—studying without pressure.

Limited-Time Enrollment Opportunity

Don’t miss the chance to secure our clinical bundles. Secure 3, 5, or all 14 courses at our lowest professional rates and begin building your credentials today.

Recognized Clinical Credentials

Our specialized diplomas aren’t just theory; they are practical toolkits designed to help you make a genuine difference in people’s lives, whether you are entering the field or adding to your existing practice.

⭐ Expert Tuition

Dr. John Crimmins will be your tutor and guide throughout your learning journey. With 25 years of experience, he is available to offer his expert support, ensuring you achieve your goals with confidence.

What our Students are saying

I signed up for a five Diploma package including Cognitive Behavioural Therapy and have extracted fantastic tools from every course. The multiple modes of delivery — video, literature, research and case studies — make for a fantastic learning environment. The continuous support and friendly demeanour of Dr. John Crimmins is invaluable. His detailed feedback on assignments clearly displays his passion for Psychology and continuous development.
I want to express my utmost thanks to Dr John Crimmins for all the support and encouragement throughout my studies. The CBT content is extremely valuable — rich at an academic level but also deeply practical for everyday life. As well, they went above and beyond by providing extra reading links for those who are interested for more in depth research on particular data.   My experience with the Institute was and still is positive and exciting.
The course material was really interesting, easily accessible and the website was user friendly. The support through email made it an amazing learning journey. This course has opened a new path in my professional career and will benefit our community here in the UAE. Special thanks to Dr Crimmins for his guidance and valuable support. I do recommend people to explore the options thru the website and register.

Benefits of Online Training

Professional support

Receive professional guidance from Dr. John Crimmins, PhD-level Psychotherapist and Director, with 25 years of experience.

Lifetime Access

Enjoy complete flexibility with no time limits to finish your courses, and lifetime membership to access materials.

Accredited Diploma

Earn a Diploma for EACH course from a fully accredited Mental Health Institute, recognized globally.

Choose your plan

Select your path. These limited-time enrollment rates are currently available

No hidden extra costs, this is all you will pay. 

3 Course Bundle

£ 395
  • Any 3 Accredited Diplomas
  • 3 Professional Certifications
  • Full Tutor Support via email
  • Lifetime Membership

5 Course Bundle

£ 595
  • Any 5 Accredited Diplomas
  • 5 Professional Certifications
  • Full Tutor Support via zoom
  • Lifetime Membership

All our courses

£ 995
  • 14 Accredited Diplomas
  • The Complete Clinical Library
  • Cutting-Edge Innovation
  • Access to All Clinical Specialisms.

The Behavioural Training Institute is fully accredited by the CPD Certification Service in London. Our programs meet rigorous international standards, providing you with a globally recognized qualification that enhances your professional standing and clinical expertise

Official CPD Certification Service London Accredited Provider Logo - The Behaviour Institute

Frequently Asked Questions

No. The promotional price is all-inclusive. This price covers all course content (available 24/7 for your study), all assignments graded personally by Dr. Crimmins, and your tutorials. Upon successful completion, a Digital Certificate and an Official Letter of Completion will be emailed to you at no extra cost.

This is entirely up to your own schedule and personal commitments. While most students complete a course within 3 to 6 months, there is no fixed deadline. Our platform is designed for maximum flexibility—you can fast-track your studies or take a break between modules with absolutely no pressure. You set the pace that works for your life.

Yes. You will have lifetime access to all course materials and toolkits. This allows you to return to the content whenever you need to refresh your knowledge in your professional practice.

No. While you are enrolling in a bundle, we recommend completing each course individually. This ensures you fully absorb the clinical techniques and theory before moving on to the next specialism.

Each course consists of two written assignments (approximately 1,500 words each). These are designed to test your practical application of the curriculum. You can upload your work directly through our secure learning platform.

Dr. John Crimmins (PhD) personally reviews, grades, and provides constructive feedback on every assignment submitted.

We recognize that our students lead busy, complex lives. Our programs are designed with maximum flexibility. If you need to step away, simply send us an email and we will facilitate a break in your studies at no extra cost.

Yes. All diplomas are fully accredited by the CPD Certification Service in London UK. ensuring the hours spent studying contribute toward your professional development and credentials.

No. At the Behaviour Institute, we value real-life experience just as much as a school certificate. Our students come from all walks of life—some are looking for a completely fresh start, while others already have a Master’s degree. We’ve designed these courses to be easy to follow for beginners, but deep enough to keep experts interested. Your past doesn’t define your potential here; if you’re ready to learn, you’re ready to enroll.

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