Long leaseholders have for the right of first refusal of their freehold, with some exemptions. The freeholder must offer the freehold to the leaseholders before selling the freehold to a third party to avoid committing a criminal offence.
It applies to the disposal of any property containing 2 or more flats held by qualifying tenants, as long as more than 50% of the flats in the property are held by qualifying tenants.