Something I saw as part of this news this morning is that the tax on north sea extraction is 78%. This surprised me so not sure if it's true, but if true, it does seem high given the remaining oil is harder to get.
If that 78% includes the government taking on clean up costs and other things then fine. But if not, then seems to me it would be sensible to lower it to encourage some further extraction. I think humanity should stop burning oil asap but until we do I don't see why we should import it if we have a local source.