This is usually a County Council or a Unitary Authority. It is the authority responsible for the maintenance, cleansing, drainage and lighting of particular public highways.

The Authority responsible for the road in question. In the case of Trunk roads (A316 and A205) the Central Government Highway Agency acts a s Highway Authority. For all other roads in the Borough the Highways Authority is the London Borough of Richmond upon Thames itself. Notwithstanding this, the Traffic Director for London has a remit in respect of Red Routes and regarding Priority Roads. Within this Borough the only Red Routes are the A316 and A205, which are also Trunk Roads. The Priority Route network can be seen in the Unitary Development Plan.

The Highway Authority (Somerset County Council) is the body responsible for maintaining public rights of way and keeping them free from obstruction.