Hi, Mill Road is an unclassified road ref U7063 from the B1063 to the PRoW near the gate. From there to the  A143 It is a farm track designated as a Public Footpath. The above information is available on the county definitive map. The names you added are at best unneeded descriptions, definitely not formal names. Thus I've made corrections to reinstate the original data but showing the general access to the track as agricultural.

Regards Bernard.