Dorset Council has the power to remove any items, including signs, placed within the highway that are considered a nuisance or a danger to highway users (including causing a danger by obstructing view) under section 149 of the Highways Act 1980. If the sign constitutes a danger to highway users, the sign may be removed under section 149 even if it is not in direct contravention of this policy.
It is also an offence under section 132 of the Highways Act 1980 to “affix a sign, picture or letter onto the surface of the highway, a tree, structure or works in or under the highway”.
The owner would be liable for a fine and the Highway Authority could remove the sign. The sign cannot be destroyed or sold unless a Court Order is first obtained under section 149 of the Highways Act 1980, as above.