Gritting - Who does it, Why, and What is it?

In Central Bedfordshire, The Highways Agency is responsible for gritting the A5, A421,A1 and the M1. The Central Bedfordshire Council cover much of what main roads remain.

http://www.centralbedfordshire.gov.uk/transport/salting/gritting.aspx

This pdf file has been produced to explain more.   Gritting - Your Questions Answered