So where are the Gritters

Alright, so what the hell has happened to the gritters. all this snow and ice on the roads and no gritter in sight. To be fair I saw one in Camberley town centre and one on the A3095 but the later one was just ploughing as there was no grit coming out from behind it. You'd have thought that all the warnings they had would have got them into action and sort out the roads. this is typical, loads of warning of bad weather and bugger all gets done.