OYBK, just seen the bit where you looked up from your desk to realise your car was covered in snow. Was work distracting you from your primary function (Professor OYBK of the Mumsnet Academy, Department of Meteorology)? 
Was snowing very slightly in N Herts/Beds border when I came out of the station. The sort of snow where you have to look under street lights to check it really is snow not light rain.
Any idea whether we'll get any more overnight? I'd love a snow day but have been asked out to a posh restaurant tomorrow night on someone else's budget so ideally no snow tonight, please!