Switch your glance away from the monkey and onto the organ grinder.
The 'root cause' isn't what you assume, in itself. It is that we marketised and sold off our National Resource (oil and gas from the North Sea) in a way some other countries like Norway did NOT. If we'd kept National control rather that flogging off decades of extraction to international corporations we would still be 'selling the oil to ourselves' at essentialy the *production* cost. Not the 'world market price'.
That's where the 'conventional widom' (Monetarism creed of 'economics') shot us in the foot. Erm, apparently there was 'no alternative' although - actually in mere reality there was, and is.
Similarly, we have for decades now failed to use any of the profit we could get from selling the 'excess' (to our needs) on the World market... and then *investing* that in other sources - wind, water, whatever - to ensure we reduced our reliance on 'big fossil'. The point here is that successive Governments have simply relied on 'cheap fossil' and not actually acted for our future benefit. Because they assumed it for 'the market' to decide.