Hi John,
There's a map of UK CB nets here :-
http://thebreakersyard.com/cb-radio-nets/
Also a map of 'registered' CB users here :-
https://www.thunderpole.co.uk/cb-radio-user-map.html
(Scroll down the page for the Google map)
It does look a bit thin around the Cumbria area unfortunately. That being said, you only need to find one contact who will chat regularly at a set time and frequency and pretty much create your own net. Add that time slot and frequency to the above lists or here on Charlie Tango's, other people will find that information and who knows, that net may grow
Best of luck,
Victor