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Terms and conditions


These are the terms and conditions (the “Terms”) on which we supply services to you as a private patient of Dr. Leen Tannous MBBS MRCGP AFMCP. 

These terms and conditions are a binding legal agreement between you and Dr. Leen that govern your use of the websites, applications, and other offerings from Dr. Leen (collectively, the “Functional Medicine Doctor Platform”). When used in these Terms, “Doctor Leen,” “we,” “us,” or “our” refers to the Doctor Leen clinic with whom you are contracting. We maintain other terms and policies that supplement these Terms like our Privacy Policy, which describes our collection and use of personal data, and our Payment Terms, which govern any payment services. 

Please read these terms and conditions carefully prior to and during the use of our services. 

Important Notice

Please note the following:

  1. A minor under the age of 18 is only permitted to use the services offered by us if the minor’s parent or guardian makes a booking for an appointment and the parent or guardian is present during the appointment, the only exception being that minors between the age of 16 and 18 can attend an appointment with or without a parent present (but the booking for the appointment must still be made via their parent or guardian);

  2. You must not use our services for any inappropriate purposes (including, without limitation, to obtain clinically inappropriate prescriptions);

  3. Following an appointment with one of our doctors you must seek further medical advice from us or another healthcare professional if you have any concerns about the information given to you by us or if your condition changes, and you must seek immediate medical assistance if you suffer adverse or unexpected effects of any treatment, medicine or healthcare product recommended to you by us;

  4. You acknowledge that any information on our website is for general educational and informational purposes only and is not intended to amount to advice from a doctor on which you should rely.


How to contact us

You can contact us on the following address:

 If we have to contact you, we will do so by telephone or by writing to you at the email address or postal address you provided to us in your order. “Writing” includes emails. 

Unless specified otherwise, any notices or other communications to us permitted or required under this agreement, will be provided electronically and given by us via email, the Doctor Leen Platform notification, messaging service (including SMS and online Chat service), or any other contact method we enable you to provide.

Our Services

We offer consultations with Dr. Leen Tannous a general practitioner based in London with experience in functional medicine. Additional information about our services may be found in 'consultations' on the following link The services are being provided by a medical practitioner that is qualified and registered in accordance with the laws of England and Wales. 

When providing the services, we will provide an expert assessment to evaluate the treatment you require, considering your medical history, national guidelines, and any of your particular needs. 

You can make an appointment for a consultation with us on our website by using the following link Appointments are subject to our availability and are made available to you at our sole discretion. We do not make any guarantee with respect to availability. 

When you make an appointment for a consultation, you are making an offer to buy our services. Your offer will only be accepted by us and a contract formed when we have confirmed your appointment in writing and you have paid the full consultation fee upfront as a form of deposit to secure your consultation in accordance with these Terms. If we do not respond to your request for a consultation, such will not be deemed as acceptance of the offer and/or the consultation appointment. When you make an appointment for our services as an existing patient the contract you entered into when accepted as a new patient will continue to apply and we will charge you for the consultation fee in accordance with these Terms. 

It is understood by you that booking a consultation does not guarantee that a prescription for medication will be provided by us. Issuing any prescription is at our sole discretion. You understand and accept that private prescriptions are fulfilled at a charge and time unique to the fulfilling pharmacy, which is not under our control or the prescribing doctor’s control. It is your choice as to whether you have any prescription fulfilled and at what cost.

To be able to provide the services we will request certain information from you. Such information may include, certain personal details, and any documents and information relating to your medical history and current symptoms. You may be required to complete a registration document on your medical history and current symptoms which allows us to consider the most appropriate medical treatment and to understand the root cause of your condition. This information will be governed by our Privacy Policy. If you do not provide us with information we need we may not be able to treat you and we may either end the contract or make an additional charge of a reasonable sum to compensate us for any extra work that is required as a result. We will not be responsible for providing the services late or not providing any part of them if this is caused by you not giving us the information, we need within a reasonable time of us asking for it.

We are not responsible for delays outside our control. If our performance of the services is affected by an event outside our control then we will contact you as soon as possible to let you know and we will take steps to minimise the effect of the delay. Provided we do this we will not be liable for delays caused by the event but if there is a risk of substantial delay you may contact us to end the contract and receive a refund for any services you have paid for but not received.

We may have to suspend the services to reflect changes in relevant laws and regulatory requirements or make changes to the services as requested by you or notified by us to you, which may affect your appointments. We will contact you in advance to tell you we will be suspending the services, unless the problem is urgent or an emergency. You may contact us to end the contract if we suspend the services which means an appointment is delayed by more than four weeks.

Should you be experiencing complex medical symptoms which requires specialist attention we may, where appropriate, refer you to a specialist medical practitioner or consultant. We are not responsible or liable for any advice or treatment an external medical practitioner offers you, regardless of whether we made the original referral.

We reserve the rights to change our services and these Terms at our discretion. In such an event we will notify you and you may contact us to end the contract or to ask any questions regarding such changes. 



The prices for our consultations and other services are set out on our website the date you make an appointment, unless we have agreed another price in writing. We will confirm our prices before accepting your appointment.

You may incur additional costs for additional time with Dr. Leen Tannous including email correspondences, telephone calls and laboratory fees. Wherever possible we will notify you of these costs prior to providing you with our services but, in the event we are unable to, our prices will be as set out on our website.

Payment will be made on our website at the time the consultation is booked. In the event where invoices are issued by us to you for any of our services, such invoices must be paid within a period of 30 days from the date of issuance of such invoice. Any late payment beyond the due date will permit us to charge a late payment interest charge at the rate of 5% per year at the rate determined in our sole discretion. Interest shall accrue on daily basis from the due date until the full payment of the relevant invoice. 

In the event where there is an issue with any invoice, please contact us directly on the address contained in clause 2 above.


You have the right to end the contract between us at any time prior to the confirmation and payment of the consultation. You may contact us at any time to end the contract for the services, including by cancelling an appointment, but in some circumstances we may charge you certain sums for doing so, as described below.

You may cancel an appointment at any time on giving 48 hours’ notice. You may cancel any appointment at any time by notifying us in writing. You will not be charged if you cancel an appointment up to 48 hours before the scheduled start time of the relevant appointment.

You will be charged if you cancel an appointment on less than 48 hours’ notice. If you cancel an appointment within 48 hours of the scheduled start time of the relevant appointment you will be required to pay for the cost of the appointment. You accept that we are not responsible and will accept no liability for any costs, expenses or losses that you suffer as a result of your failure to properly cancel any appointment with 48 or more hours’ notice. This is because, we will typically see only 3-4 patients a day and a last minute cancellation is not often possible for us to fill so please bear this in mind.


We may be able to terminate our contract with you in the event where you do not provide us with the necessary information required for the performance of our services (as outlined in these Terms), you do not make payments when due in accordance with the timelines included in these Terms, or in the event where you breach your obligations under these Terms. In such a case we may write to you to inform you that we are going to stop providing the services.

Responsibility for Loss

We are responsible to you for foreseeable loss and damage caused by us. If we fail to comply with these terms, we are responsible for loss or damage you suffer that is a foreseeable result of our breaking this contract or our failing to use reasonable care and skill, but we are not responsible for any loss or damage that is not foreseeable. Loss or damage is foreseeable if either it is obvious that it will happen or if, at the time the contract was made, both we and you knew it might happen.

We do not exclude or limit in any way our liability to you where it would be unlawful to do so. This includes liability for death or personal injury caused by our negligence or the negligence of our employees, agents or subcontractors and for fraud or fraudulent misrepresentation.

You are responsible and liable for your own acts and omissions. 


Except as they may be supplemented by additional terms, conditions, policies, guidelines, standards, and in-product disclosures, these Terms constitute the entire agreement between us and you pertaining to your access to or use of the Doctor Leen Platform and supersede any and all prior oral or written understandings or agreements between us and you. These Terms do not and are not intended to confer any rights or remedies upon anyone other than you and us. If any provision of these Terms is held to be invalid or unenforceable, such provision will be struck and will not affect the validity and enforceability of the remaining provisions.

Our failure to enforce any right or provision in these Terms will not constitute a waiver of such right or provision unless acknowledged and agreed to by us in writing. Except as expressly set forth in these Terms, the exercise by either party of any of its remedies under these Terms will be without prejudice to its other remedies under these Terms or otherwise permitted under law.

You may not assign, transfer or delegate this agreement or your rights and obligations hereunder without our prior written consent. We may without restriction assign, transfer or delegate this agreement and any rights and obligations hereunder, at our sole discretion, with 30 days’ prior notice. Your right to terminate this agreement at any time pursuant to clause 5 remains unaffected.

The Doctor Leen Platform may contain links to third-party websites, applications, services or resources (“Third-Party Services”) that are subject to different terms and privacy practices. We are not responsible or liable for any aspect of such Third-Party Services and links to such Third-Party Services are not an endorsement.

We shall not be liable for any delay or failure to perform resulting from causes outside our reasonable control, including, but not limited to, acts of God, war, terrorism, riots, embargoes, acts of civil or military authorities, fire, floods, accidents, epidemics or disease, strikes or shortages of transportation facilities, fuel, energy, labor or materials.

These terms are governed by English law and you can bring legal proceedings in respect of the services in the English courts.

You can find the complaint policy on our website

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