@izzythepush,
I think the Norwegians are great. Probably the most modest, quiet, sensible gas and oil billionaires in the world.
I think we have enough natural gas from the North sea to provide about 10, maybe 15% of our needs, and the rest gets split 80/20. 80% of the shortfall comes from our direct neighbours across the puddle (Norway, Holland) and 20% from a sandy place, mainly Qatar.