Sebastien Louis Lomas
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Conditions from:
13 Jun 2025
until:
12 Sep 2026
Conditions:
1) You must notify the GDC within seven days of any professional appointment you accept or are currently undertaking and provide the contact details of your employer, any organisation for which you have a contract or arrangement to provide dental services and all the NHS regional teams/Health Boards with whom you have an arrangement, either as a contract holder or by being on their Dental Performers’ List.
2) You must allow the GDC to exchange information with your employer, any organisation for which you have a contract or arrangement to provide dental services, all the NHS regional teams/Health Boards with whom you have an arrangement.
3) You must inform the GDC within seven days of any formal or informal disciplinary proceedings taken against you from the day these conditions take effect.
4) You must inform the GDC within seven days of any complaints made against you from the date these conditions take effect.
5) You must inform the GDC within seven days if you apply for dental employment outside the UK from the day these conditions take effect.
6) You must inform the GDC if you are registered or applies for registration with any overseas regulator/relevant authority, within seven days of the date of the application or seven days from the date of this determination if already registered.
7) At any time you are providing dental services, which you to be registered with the GDC, you must agree to the appointment of a reporter nominated by you and approved by the GDC. The reporter shall be a GDC registrant in the same category as you (or higher). The reporter shall work in the same practice as you.
8) You must provide a report from the reporter to the GDC every two months and at least 14 days prior to any review hearing. This report should include:
a) Confirmation of compliance with these conditions;
b) Details of any complaints received and their resolution;
c) Any other relevant information.
9) You must allow the GDC to exchange information about your conditions with any reporter.
10) You must refrain from carrying out implant treatment, including ceramic implants.
11) You must refrain from making statements via social media that imply a connection between root canal surgery and Lyme disease, or root canal surgery and inflammatory conditions or that suggest a link between metal amalgam fillings and mercury toxicity.
12) You must also remove any existing online content relating to such statements as stated in Condition 11).
13) You must provide the GDC with a signed statement confirming compliance with Condition 12) within seven days from the day these conditions take effect.
14) You must inform within seven days the following parties that your registration is subject to the conditions, and provide written evidence to the GDC within seven days of this being completed:
a) Any organisation or person employing or contracting with you to undertake dental work;
b) Any prospective employer (at the time of application); and
c) The Commissioning Body or Health Board in whose Dental Performers List you are included or seeking inclusion (at the time of application).
15) You must permit the GDC to disclose Conditions 1) to 13), above, to any person requesting information about your registration status.
Conditions from:
11 Mar 2026
until:
10 Jun 2027
Conditions:
1. You must provide the GDC, within seven days, the contact details and arrangements for any appointment you accept or are currently undertaking which requires GDC registration, and allow the GDC to exchange information with your employer or any contracting body for which you provide dental services. You must also provide the GDC, within seven days, the contact details for the commissioning body in whose Dental Performers List you are included, or seeking inclusion (at the time of application).
2. From the date that these conditions take effect, you must inform the GDC within seven days of being notified of:
i. any formal disciplinary action taken against you
ii. any NHS investigation
iii. any regulatory or enforcement action taken against you or a practice for which you are the registered provider
iv. any patient complaint received about your clinical practice or conduct at work.
3. You must inform the GDC, within seven days of these conditions taking effect, if you are registered with any overseas regulator (or equivalent authority) or within seven days of making an application for registration with any overseas regulator or equivalent authority.
4. At any time you are employed to provide dental services which require you to be registered with the GDC, you must remain under the supervision* of a workplace supervisor nominated by you and approved by the GDC. The workplace supervisor must be a GDC registered dentist. You must not start/restart work until your proposed workplace supervisor has been approved by the GDC.
5. You must provide reports from your workplace supervisor to the GDC every 3 months and at least 14 days prior to any review hearing. The report must address:
• any form of appliance therapy to adjust or correct a patient’s occlusion
6. You must stop working immediately if your workplace supervisor directs you to do so, and you must inform the GDC within seven days of receiving this direction.
7. You must carry out an audit in the following areas of your practice of any form of appliance therapy to adjust or address a patient’s occlusion every 3 months. The audit must be checked and signed by your workplace supervisor.
8. You must provide a copy of this audit to the GDC every 3 months and at least 14 days prior to any review hearing or, alternatively, provide a statement, which has been counter-signed by your workplace supervisor, confirming there have been no such cases.
9. You must maintain a log detailing every case, including a nil return, where you have undertaken any form of appliance therapy to adjust or correct a patient’s occlusion.
10. You must provide a copy of this log verified by your workplace supervisor to the GDC every 3 months and at least 14 days prior to any review or alternatively, provide a written statement confirming that there have been no such cases during that period also verified by your workplace supervisor.
11. You must inform the following parties that your registration is subject to the conditions listed at 1 to 10:
• Any organisation or person employing you or who has an arrangement with you to undertake dental work (within seven days).
• Any professional regulatory body you are registered with (within seven days), or apply to be registered with (at the time of application).
• Any locum agency or out-of-hours service you are registered with (within seven days), or apply to be registered with (at the time of application).
• Any prospective employer (at the time of application), or any organisation or person with whom you intend to enter into an arrangement to undertake dental work (at the time the arrangement is made).
• The commissioning body in whose Dental Performers List you are included (within seven days), or seeking inclusion (at the time of application).
You must forward written evidence of your compliance with this condition to the GDC within seven days of notifying the relevant parties of your conditions.
* Supervised: the workplace supervisor must supervise the registrant’s day-to-day work in a way prescribed in the relevant condition or undertaking. The workplace supervisor does not need to work at the same practice as the registrant, but they must be available to provide advice or assistance if the registrant needs it. Where the workplace supervisor is unavailable through illness or planned absence, the registrant must not work, unless an approved alternative workplace supervisor is in place. The workplace supervisor must review the registrant’s work at least once a fortnight in one-to one meetings and case-based discussions. These meetings must focus on all areas of concern identified by the conditions or undertakings. These meetings should usually be in person. If this is not possible, at least one of every two fortnightly meetings must be in person.
Registration History:
On 11 March 2026, the Interim Orders Committee imposed conditions on Mr Lomas's registration for a period of 15 months.
This will be reviewed in 6 months.
The conditions on registration are listed on Mr Lomas's register entry. To visit the register entry, please copy this link and open it in your browser:
https://olr.gdc-uk.org/SearchRegister/SearchResult?RegistrationNumber=289356&Surname=&qs=1
At a review hearing on 30 April 2026, the Interim Orders Committee continued the conditions on Mr Lomas's registration for the remainder of the 15 month order. The interim order was originally imposed from 13 June 2025 for 15 months. This will be reviewed in 6 months. The conditions on registration are listed on Mr Lomas' register entry. To visit the register entry, please copy this link and open it in your browser: https://olr.gdc-uk.org/SearchRegister/SearchResult?RegistrationNumber=289356&Surname=&qs=1
Please note that Mr Lomas' registration is currently subject to sanctions under two separate cases.