Uranium is very common, but, same as with tar sands, it isn't always a sensible power source. Then there is the minor issue of how you ship ore from Australia to Europe when you haven't got any oil to power the ships? I guess nuclear container ships, but seems rather wasteful to use limited supplies to power a ship to transport a limited supply.
Secondly using Nuclear doesn't get away from the massive reliance on fossil fuels to provide fertiliser.
The only good solution is cut down on the use of energy, talking about alternative supplies while we waste huge amounts is stupid. How much food do we throw away, why do we build such crap energy inefficient buildings, why do we drive metres rather than walk or cycle.
Cut down resource waste and look to longterm energy security. Look at the sources of power in the UK not to nuclear, oil etc,