Jason Demant- Addictions, Quit Smoking & Anxiety Expert

Jason Demant-  Addictions, Quit Smoking & Anxiety Expert

Box Tree Clinic
4 Devonshire Street

18b North End Road
Golders Green
NW11 7PH

07504 742606

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About me

Would you like to see more happiness, calm and control within your daily life? I am a London expert in solution-focused Hypnotherapy and NLP and the Director of The College of Clinical Hypnotherapy and Mindfulness.

I am a validated practitioner of the General Hypnotherapy Standards Council, an accredited member of the UK Complementary and Natural Healthcare Council and a recognised treatment provider for PruHealth private medical insurance.

I am a recognised leading authority on anxiety, smoking cessation, overeating, stress and addictions, frequently teaching courses to therapists, doctors and allied health professionals on Life Coaching, Mindfulness and Hypnotherapy interventions for anxiety and addictions.

I have been fortunate to help a wide range of clients, from teens to small business owners, to bankers and clergy, from teachers and scientists to a television presenter and a former cabinet minister. I have been seeing clients in London for ten years and will be able to help you too. I keep my fees 20% lower than fellow Harley Street hypnotherapists and offer a refund guarantee when a package of sessions is booked.

I see clients in three locations in London. I am a member of the Box Tree Clinic in London's Harley Street District, W1W 5DT, a few minutes from Great Portland Street Tube station and close to Warren Street Tube station. I also see clients in Golders Green (NW11) and Kentish Town (NW5).

I have many years experience helping individuals overcome issues including addictive patterns, anxiety, low self-esteem, quitting smoking, real long term weight loss, drug use, career success, stress management.

I work hard to reduce the issues for which you came for help. Together we will look to change unhelpful thought patterns, kick habits and help you feel more in control and able to cope. I compare my approach to a personal trainer, but for your emotional well being. A personal trainer helps you get in shape and build your muscles. Through my sessions your will get your emotions and thoughts back in shape and build your confidence and resilience 'muscles', feeling truer self-esteem and re-discover as well inner tools, seeing daily life with more balance, happiness and fulfillment.
I'm no stranger to life’s challenging issues. I understand addictive patterns and what anxiety is like. I feel confident you will gain a great deal with my dedicated support. I am available between sessions as well, to talk by phone or email.

Are you looking for some help and guidance with a pattern or habit you would love to change? Are you battling with:

=Stress, Anger, or Anxiety


=Weight Gain

=Consuming Too Much Alcohol

=Drug Use

=Pain Management

=Addictive Patterns Around Technology or Social Media

=Pornography or Internet Addiction

Central London and North London

I see clients in London's Harley Street Medical District,  Golders Green and in Kentish Town. I have been working for over ten years, primarily by using:

  • Advanced clinical hypnotherapy
  • Life coaching
  • NLP (Neuro-linguistic programming),
  • Cognitive behavioural therapy (CBT)
  • Mindfulness based interventions

Sessions are about your unique needs rather than a generic approach. I have a results-driven focus. Sessions are confidential and supportive and it is important that you feel comfortable and able to talk about anything at all. Call or text me on 07504742606 and I can call you back to arrange an informal chat about what you need.

I offer a free phone consultation so you can explain more about what you are going through. Even after your phone consultation if you do not wish to book sessions, that is totally fine. There is no pressure and you are under no obligation whatsoever.

Call, text or email today to find out more. I'm here to help.

Fees (Sessions are for 50 minutes except for smoking cessation)

Your Initial Phone Consultation: Free

Harley Street

Clinical Hypnotherapy: £115 (Book four sessions: £395)

Smoking Cessation (2.5 hours): £245

Golders Green and Kentish Town

Clinical Hypnotherapy: £80 (Book four sessions: £295)

Smoking Cessation (2.5 hours): £195


When asked, 'What did you gain most from working with Jason?'

The words of some previous clients:

Weight Loss

"Jason really helped me sort out my problems with my relationship to food. I learnt simple and effective steps to help me eat in a conscious way, know when to eat and when not to. I learnt to identify real hunger and to know when I have had enough. Jason is genuine and caring and was very easy to speak to. I highly recommend him when dealing with weight loss and food issues". Rebecca. London


"Jason, You have been very helpful. Changing negative habits for positive ones is really the key. The meditation exercises were great. But the most effective thing is to have someone to talk to. Rarely do you find somebody who takes you by the hand and shows you a way out. My breathing capacity has increased and this changes my whole personality. My children came last night and they asked me whether I have done a face-lift. Of course, the skin looks much better without a veil of smoke and depriving the cells of oxygen and vitamin C. I also became much more assertive". Michelle


After one session, lifelong nailing biting in the evening is now dramatically improved and all minor temptations resisted in the week. Secondary benefit is a major improvement in my Bus-related PTSD. When I get on a bus now my arms become warm & relaxed & I sit back on the journey. Amazing". Belinda, Finchley

"Hi Jason. Thanks for your email. I have not been anxious at all thank God (and you!)". Sophie, email extract


Get in touch today and book your free initial phone consultation.

Training, qualifications & experience

I am a fully certified clinical hypnotherapist, NLP (Neuro-linguistic programming) practitioner and Mindfulness teacher.

My passion is helping people make positive changes and feel greater optimism and confidence about all areas of life.

  • I hold a diploma in clinical hypnotherapy, counselling and NLP from Life Matters Training College, based on Harley Street, London and am a certified Life Coach and NLP practitioner with hundreds of hours of clinical experience.
  • I am a validated practitioner of the General Hypnotherapy Standards Council, a member of the General Hypnotherapy Register (GHR).
  • I am an accredited member of the Complementary and Natural Healthcare Council UK and I work under their regulations.
  • I am also a recognised provider of treatment for certain clients with PruHealth private medical insurance.

I teach and supervise, in London, a specialist course for health professionals and hypnotherapists in Life Coaching and NLP interventions for weight loss and emotional eating.

Member organisations


Accredited register membership

Other areas of hypnotherapy I deal with

I also support clients with change and transitions such as career change, managing change at work or coping with workplace stress, time Management, business coaching.Anxiety.

I am an expert in weight loss, overeating and emotional eating. My weight loss programme is  structured and suited to your needs

Email or call today to find out more.

Photos & videos

  • Hear How I can Help You
  • Jason Demant


I offer a free initial consultation, by phone, under no obligation. All session prices include free coaching by email between sessions.

Fees (Sessions are for 50 minutes except for smoking cessation)

Your Initial Phone Consultation: Free

Harley Street (W1W)

Clinical Hypnotherapy: £115 (Book four sessions: £395)

Smoking Cessation (2.5 hours): £245

Golders Green (NW11) and Kentish Town (NW5)

Clinical Hypnotherapy: £80 (Book four sessions: £295)

Smoking Cessation (2.5 hours): £195

Booking a block of sessions is more cost effective than individual sessions and often has a accompanying satisfaction refund guarantee too. It is also normally possible to pay in installments.

London, W1W 5DT
London, NW11 7PH

Type of session

Home visits: No

Practical details

Sign language: No
Other languages: None


Wheelchair access: Yes

Box Tree Clinic, Harley Street has a lift


Available every day, which includes some evenings and most weekends.Last minute sessions often available too.