eh?
how do you mean 'if we start shipping oil again' or 'if our outgoing pipelines were at more than 10% capacity'?
sounds like you're saying we'd be fine if we could only export more to balance the imports... if that's what you meant then you've missed the point that our production levels have now dropped below our consumption levels, and will be dropping further behind rapidly over the next 5 years. This is the reason we'll be spending 10% of our GDP on oil and gas imports in 5 years time.
Actually 10%'s probably a bit hopefull as it's based on current price levels, and the recent experience of the UK trying and failing to buy in Liquified Natural Gas on the world markets would be a good indication that the price of imported gas is likely to be significantly higher than current levels.
eta - Apologies if I've misunderstood what you were saying btw