There are literally hundreds of treatments available under NHS GDS terms. They are available to all NHS registered patients and are subsidised by the NHS. It is impossible to list all the options however they are satisfactory to achieve and maintain oral health and function. You will not be entitled to any aesthetic options and several popular options e.g white fillings/crowns and back teeth, tooth whitening etc are not available under NHS terms.
NHS dental treatment fees are amongst the cheapest you will find in the developed world and make absolutely no provision for aesthetics. If you value your dental appearance ask your dentist for the full range of options available.