Haven't done NHS for many years (outside of hospital) and at that stage they did not allow provision for white crowns on posterior teeth, can't see things having changed since then.
Sorry

, an nhs dentist may be able to give you more up to date info though
Nick Fahey
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Dr Nick Fahey BDS (NZ), MCLIN DENT PROS (London), FRACDS, MRD RCS (Edin) Pros, MFDS RCS (Eng)
General Dental Council Registered Specialist in Fixed and Removable Prosthodontics
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Every tooth in a man's head is more valuable than a diamond. ~Miguel de Cervantes, Don Quixote, 1605