I'm with Mike Wright, If You wear the right clothing and keep warm,and have a winter bike it can still be great to get out and ride in winter.

It's not everyone's cup of tea.

If you have a winter bike set up for the harsh conditions,plus the right tyres you can get grip in the snow.

That said I would not take my Tenere out in these condition.

here is a clip of us trying to get out of Gayle {near Hawes} over to Buckden.

http://www.youtube.com/watch?v=RU_N4YIvlBU

http://www.youtube.com/watch?v=7TT-NVkjHEY&feature=related