Dentists in the UK are not allowed to refuse any treatment available on the NHS and then offer it privately. According to the dental director of England's NHS, dentists have the right to refuse to care for certain patients. All treatments provided by dentists in the NHS must meet the highest standards and must be equal to any treatment offered privately. It is against the rules for a dentist to deny specific treatments, such as endodontics, in the NHS and then offer them privately. As a patient, you have the right to access additional private treatment in addition to NHS dentistry.
This can be done by the same dentist at the same time. You also have the option of seeking a second opinion from another dentist at one of the many dental clinics in London or around the United Kingdom. However, you will still need to pay for the original consultation fee and any expenses related to the treatment performed by the second dentist. You can go to a Health Service dentist with a fixed fee scale or pay a private dentist depending on the type of dental care and treatment you need.