All Councils are statutory obliged to maintain an up to date road adoption gazetteer . Today I decided to check the status of the roads on the development adjacent to my property and found, contrary to what they assert, the roads are still not listed as adopted. In addition, I also noticed this week that a private company was still maintaining the play area, open space and part of the road that the Council curiously lists as adopted. I have previously asked (and paid) for a definitive statement regarding the true situation but the Council refused to supply a definitive statement and returned my money instead.
Sometimes the truth is not in what the Public Authority says but in what they refuse to say.
 Highway Act 1980 Section 36
(6) The council of every county and London borough and the Common Council shall cause to be made, and shall keep corrected up to date, a list of the streets within their area which are highways maintainable at the public expense.
(7) Every list made under subsection (6) above shall be kept deposited at the offices of the council by whom it was made and may be inspected by any person free of charge at all reasonable hours and in the case of a list made by the council of a county [F8 in England], the county council shall supply to the council of each district in the county an up to date list of the streets within the area of the district that are highways maintainable at the public expense, and the list so supplied shall be kept deposited at the office of the district council and may be inspected by any person free of charge at all reasonable hours.