if you're camping mid November onwards in Europe you're gonna have to go as far South as you can and quickly - coz the weather in France and Northern Spain will very likely be just as shitty as England - if you want actual regular sunshine we're talking all the way to the bottom of Europe i.e the Algarve in Portugal, South Coast of Spain, the end of Italy... I really can't stress this enough, especially if you're in a tent - as an alternative what about hitting a city with a good alternative scene and making some squatter friends - e.g Toulouse, Barcelona, possibly Berlin...
also as far as I know train hopping isn't really a thing in Europe - people do it occasionally as a stunt or a one off experience, but it's not a well developed scene like it is in the States and Canada.... I'm not saying it's impossible, it would be great if train hopping became a reality in Europe, but other than a few YouTube videos I'm not aware of much information available to get you started - maybe you could blaze the trail !
one form of free train riding that is widespread in Europe is 'bunking the train' which involves getting on a passenger train with no ticket / cheap local ticket and staying on til you get ejected - frequently the conductors in France and Spain just roll their eyes and give you a chit that says you gotta pay at a later date....