Does my hon. Friend agree that while windfall taxes can be levied on oil and gas that is extracted in the UK, we will not get those revenues for decades if we do not have oil and gas exploration in the North sea? We will see windfall taxes going to foreign Governments across the world but none coming here. Does she agree that it makes no sense at all, for jobs in Scotland or for the UK Exchequer, not to have oil and gas exploration in the North sea?