The Highways Agency is responsible for the clearance of the trunk road and motorway network in England following accidents or other incidents, including collisions involving animals and vehicles.
The guidance for responding to incidents comes from the Highways Agency's Trunk Road Maintenance Manual (Volume 2: Routine and Winter Maintenance Code, paragraph 1.2.3 and 1.12.3), which requires the provision of facilities to
“...clear the highway following an accident/spillage, or any other incident, which requires attendance under emergency conditions...”
It also states:
“Debris encountered by inspectors and other maintenance personnel in traffic lanes and on hard shoulders, and which constitutes an immediate hazard, shall be removed immediately, if reasonably practical.”
Local highway authorities are responsible for all other roads, which includes the collection of animal corpses. There is no instruction to them as to actual methods, but they tend to follow guidance set out in the Design Manual for Roads and Bridges Volume 10, and the Highways Agency's Manual of Contract Documents for Highways Works.