Original: Trees on the roadside or public highways are the responsibility of our Highways department (working with our partners, Amey).
Simplified: Trees on the roadside or public highways are the responsibility of our Highways department (working with our partners, Amey).
Simplified: Trees on the roadside or public highways are the responsibility of our Highways department (in partnership with Amey).
Simplified: Roadside trees are the responsibility of our Highways department (working with our partners, Amey).