There are three NHS charge bands:
Band 1 & for emergency treatment : £23.80 - covers an examination, diagnosis and advice. If necessary, it also includes X-rays, a scale and polish, and planning for further treatment.
Band 2: £65.20 - covers all treatment included in Band 1, plus additional treatment, such as fillings, root canal treatment and removing teeth (extractions).
Band 3: £282.80 - covers all treatment included in Bands 1 and 2, plus more complex procedures, such as crowns, dentures and bridges.
Note: the full NHS charge you pay the practice, is passed on by the practice to the NHS. The practice does not keep the charge.
Below, there are useful links to the NHS website. For example, there is a link to understanding NHS charges, a link to page informing how you can receive help with costs, and there is a link about penalty charges for patients who incorrectly/falsely claim exemption from paying dental charges.