The Three Legal Tiers of Access Rights
Tier 1: Express Grant by Deed. Your Land Registry title register explicitly grants 'full right and liberty with or without vehicles to pass and repass over the private roadway'. This is the strongest legal title right.
Tier 2: Prescriptive Easement. Under the Prescription Act 1832, if property owners have driven down the unadopted road openly, continuously, and without force or permission for over 20 years, a binding legal easement is established.
Tier 3: Statutory Deemed Dedication (Public Highway). Under Section 31 of the Highways Act 1980, if the public has used the way without interruption for 20 years, the road is deemed dedicated as a public highway unless the landowner displayed notices rebutting dedication.