Hi Viper,
Not from your part of the world but recently when laning in Thetford with some people from the St Neots area. They mentioned that a lot of the lanes in Bedfordshire and Cambridgeshire are closed in winter (April -> October).
Checking the TrailWise database tonight I can confirm that a lot of lanes within 30km of Dunstable are permanently closed to motors and a lot of the remainder have seasonal TRO's....
regards
Darren